| 870 | L.D. McDow Company | Gold Run, 1870s |
| 871 | L.D.S. Church | Susanville, 1920s+ |
| 872 | Laborde, Lucien | Susanville, 1933 |
| 873 | Lafever, George | Susanville, 1912 |
| 874 | Lafluer, Harry | Susanville, 1929 |
| 875 | LaFlower, Clarence | Westwood, 1927 |
| 2181 | Laird, Edward | Smoke Creek, 1900+ |
| 876 | Lake Cemetery | Buntingville, 1858+ |
| 2085 | Lake Cemetery | Modoc County |
| 877 | Lake Greeno | Long Valley, 1890s |
| 878 | Lake Lahontan | Natural History |
| 879 | Lake School District | Buntingville, 1860s+ |
| 880 | Lamburth, W.F. | Big Valley, 1880s+ |
| 881 | Lammers, Philip | Bieber, 1931 |
| 882 | Landa, Steve | Susanville, 1930s |
| 883 | Lander, Col. Frederick | Honey Lake Valley, 1860 |
| 2129 | Landis, James F. Family | Standish, 1890s |
| 884 | Landt, Henry | Clear Creek, 1870s |
| 885 | Langguth, Fred | Westwood, 1919 |
| 886 | Langley, Herman | Susanville, 1927 |
| 887 | Lanigar, Francis | Honey Lake Valley, 1850s+ |
| 2188 | LaPoint, Gonzaque Family | Big Valley/Hayden Hill |
| 888 | La Porte | Plumas County |
| 889 | Larson, Robert | Susanville, 1933 |
| 890 | Larson, Thomas | Westwood, 1925 |
| 891 | Lassen Advocate | Susanville, 1865+ |
| 892 | Lassen Auto Company | Susanville, 1912 |
| 893 | Lassen Cemetery | Susanville, 1919+ |
| 894 | Lassen College | Susanville, 1925+ |
| 895 | Lassen College, 1940 | Yearbook |
| 896 | Lassen College, 1941 | Yearbook |
| 897 | Lassen Co-Op Company | Susanville, 1901 |
| 898 | Lassen Co-operative | |
| 899 | Lassen County | |
| 900 | Lassen County, 1864 | Organization |
| 901 | Lassen County, 1905 | Statistics |
| 902 | Lassen County, 1906 | Statistics |
| 903 | Lassen County, 1907 | Statistics |
| 904 | Lassen County, 1909 | Statistics |
| 905 | Lassen County, 1910 | Statistics |
| 2156 | Lassen County, 1910 | Brochure |
| 906 | Lassen County, 1915 | Description |
| 907 | Lassen County, 1923 | Description |
| 2182 | Lassen County, 1930 | Description |
| 908 | Lassen County Abstract Company | |
| 909 | Lassen County Agricultural Report, 1923 | |
| 910 | Lassen County Agricultural Report, 1929 | |
| 911 | Lassen County Agricultural Report, 1932 | |
| 912 | Lassen County Agricultural Report, 1934 | |
| 913 | Lassen County Agricultural Report, 1935 | |
| 914 | Lassen County Agricultural Report, 1936 | |
| 915 | Lassen County Agricultural Report, 1938 | |
| 2146 | Lassen County Agricultural Stations | |
| 916 | Lassen County Assessments, 1905 | |
| 2145 | Lassen County Bibliography | |
| 917 | Lassen County Board of Trade, 1891 | |
| 918 | Lassen County Breweries | |
| 919 | Lassen County Buildings, 1947 | |
| 920 | Lassen County Cattle History | |
| 921 | Lassen County Cemeteries | |
| 923 | Lassen County Cemeteries – Rural | |
| 924 | Lassen County Census Reports, 1860+ | |
| 925 | Lassen County Chamber of Commerce, 1886+ | |
| 2147 | Lassen County Cook Book | Farm Bureau, 1927 |
| 926 | Lassen County Creation, Thesis | |
| 927 | Lassen County Courts, Index | |
| 928 | Lassen County Courts, Probate | |
| 929 | Lassen County Courts, Notes | |
| 930 | Lassen County Courts | |
| 931 | Lassen County Courthouses | |
| 932 | Lassen County Deeds *oversize file | |
| 933 | Lassen County Delinquent Taxes, 1865 | |
| 934 | Lassen County Delinquent Taxes, 1866 | |
| 935 | Lassen County Delinquent Taxes, 1867 | |
| 936 | Lassen County District Court, 1864+ | |
| 937 | Lassen County Elections | |
| 2161 | Lassen County Elected Officials | Roster |
| 938 | Lassen County Fairs | |
| 939 | Lassen County Farmer | Susanville, 1870s |
| 940 | Lassen County Fish & Game | Natural History |
| 941 | Lassen County Golf Courses | |
| 942 | Lassen County Grand Jury, 1899 | |
| 943 | Lassen County Grand Jury, 1903 | |
| 944 | Lassen County Grand Jury, 1918 | |
| 945 | Lassen County Great Register, 1868 | |
| 946 | Lassen County Great Register, 1900 | |
| 947 | Lassen County Great Register, 1906 | |
| 948 | Lassen County Great Register, 1910 | |
| 949 | Lassen County Great Register, 1912 | |
| 950 | Lassen County Great Register, 1918 | |
| 951 | Lassen County Great Register, 1919 | |
| 952 | Lassen County Great Register, 1928 | |
| 953 | Lassen County Great Register, 1946 | |
| 954 | Lassen County Great Register, 1956 | |
| 955 | Lassen County Historic Homes | |
| 956 | Lassen County Historical Society | |
| 957 | Lassen County History | |
| 958 | Lassen County Horticultural Reports, 1890s+ | |
| 959 | Lassen County Hospital | |
| 960 | Lassen County Hospital Medical Reports 1880s+ | |
| 961 | Lassen County Hot Springs | |
| 962 | Lassen County Hunting Licenses | |
| 963 | Lassen County Jail | |
| 964 | Lassen County Land & Cattle Co. | |
| 965 | Lassen County Land & Flume Co. | |
| 966 | Lassen County Library | |
| 967 | Lassen County Lumber Mills | |
| 968 | Lassen County Military History | |
| 969 | Lassen County Military Sites | |
| 970 | Lassen County Military Roll, 1864 | |
| 971 | Lassen County Military Roll, 1865 | |
| 972 | Lassen County Military Roll, 1866 | |
| 973 | Lassen County Military Roll, 1897 | |
| 974 | Lassen County Military Roll, 1898 | |
| 975 | Lassen County Military Roll, 1907 | |
| 976 | Lassen County Military Roll, 1908 | |
| 977 | Lassen County Military Roll, 1909 | |
| 978 | Lassen County Military Roll, 1910 | |
| 979 | Lassen County Military Roll, 1911 | |
| 980 | Lassen County Military Roll, 1912 | |
| 981 | Lassen County Military Roll, 1913 | |
| 982 | Lassen County Military Roll, 1914 | |
| 983 | Lassen County Military Roll, 1915 | |
| 984 | Lassen County Military Roll, 1916 | |
| 985 | Lassen County Military Roll, 1917 | |
| 986 | Lassen County Military Roll, 1919 | |
| 987 | Lassen County Milk Inspectors, 1930s | |
| 988 | Lassen County Minerals/Mining | |
| 989 | Lassen County Newspapers | |
| 990 | Lassen County Obituaries | |
| 991 | Lassen County Pamphlets | |
| 992 | Lassen County Photographers | |
| 993 | Lassen County Place Names | |
| 994 | Lassen County Poems | |
| 995 | Lassen County Postal History | |
| 996 | Lassen County Recreation, 1930s+ | |
| 997 | Lassen County Republican Central Committee, Susanville, 1901 | |
| 998 | Lassen County Roads | |
| 999 | Lassen County Schools | |
| 1000 | Lassen County Sheriffs | |
| 1001 | Lassen County Times | |
| 1002 | Lassen County Trading Company | |
| 1003 | Lassen County Veterans | |
| 1004 | Lassen County Vital Statistics | |
| 1005 | Lassen County Vital Statistics | |
| 1006 | Lassen County Vital Statistics | |
| 1007 | Lassen County Vital Statistics | |
| 1008 | Lassen County Water Rights | |
| 1009 | Lassen County Weather | |
| 1010 | Lassen Creek | Water Rights |
| 1011 | Lassen Development Co. | Honey Lake Valley, 1892 |
| 1012 | Lassen Electric Company | Susanville, 1911+ |
| 1013 | Lassen Grain & Milling Company | |
| 1014 | Lassen Industrial Bank | Susanville, 1912 |
| 1015 | Lassen Irrigation District | Honey Lake Valley, 1905+ |
| 1016 | Lassen Land & Livestock Co. | Willow Creek Valley, 1880s |
| 1017 | Lassen Loan Company | Susanville, 1927 |
| 1018 | Lassen Lodge F.&A.M. | |
| 1019 | Lassen Logging | Susanville, 1957 |
| 1020 | Lassen Lumber & Box Company | |
| 1023 | Lassen Mail | Susanville, 1886+ |
| 1024 | Lassen Mill & Lumber Company | |
| 1025 | Lassen Mining Company | Diamond Mountain, 1880s |
| 1026 | Lassen Mining Company | Hayden Hills, 1920s |
| 2216 | Lassen Municipal Utility District | |
| 1027 | Lassen National Forest | |
| 1028 | Lassen National Park | |
| 1029 | Lassen Parlor, Native Sons | |
| 1030 | Lassen, Peter | |
| 1031 | Lassen Pluming & Sheet Metal | |
| 1032 | Lassen Realty Company | Susanville, 1923 |
| 1033 | Lassen Rock & Mineral Society | |
| 1034 | Lassen Stock Company | |
| 1035 | Lassen Telephone Company | |
| 1036 | Lassen Townsite Company | Susanville, 1912+ |
| 1037 | Lassen Union High School | |
| 1038 | Lassen Union High School | Alumni Association |
| 1039 | Lassen Union High School | Grizzly Growler |
| 1040 | Lassen Union High School | Annuals |
| 1041 | Lassen Union High School | Yearbook, 1907 |
| 1042 | Lassen Union High School | Yearbook, 1912 |
| 1043 | Lassen Union High School | Yearbook, 1914 |
| 1044 | Lassen Union High School | Yearbook, 1917 |
| 1045 | Lassen Union High School | Yearbook, 1920 |
| 1046 | Lassen Union High School | Yearbook, 1921 |
| 1047 | Lassen Union High School | Yearbook, 1922 |
| 1048 | Lassen Union High School | Yearbook, 1923 |
| 1049 | Lassen Union High School | Yearbook, 1924 |
| 1050 | Lassen Union High School | Yearbook, 1925 |
| 1051 | Lassen Union High School | Yearbook, 1926 |
| 1052 | Lassen Union High School | Yearbook, 1940 |
| 1053 | Lassen Union High School | Calendars |
| 1054 | Lassen Water Light & PowerCo. | |
| 1055 | Lassen Willow Creek Water Co. | |
| 2209 | Laufman, Cyrus | Susanville, 1880s |
| 1056 | Laufman, Edwin | Milford, 1900s+ |
| 1057 | Laughead, W.B. | Westwood |
| 1058 | Laughton, Ray R. | Peg Leg Mtn., 1920 |
| 1059 | Lawler, R.E. | Ravendale, 1929 |
| 1060 | Lawrence, Bill | Westwood, 1920a |
| 2087 | Lawrence, C.H. | Plumas County |
| 1061 | Lawson, Cyrus | HLV, 1860s |
| 1062 | Lawson, Wade H. | Milford, 1925 |
| 1063 | Layton, W.H. | Madeline, 1935 |
| 1064 | Lear, William H. | Susanville, 1925 |
| 1065 | Leavitt, Benjamin H. | HLV, 1864+ |
| 1066 | Leavitt Development Company | |
| 1067 | Leavitt Lake Cemetery | |
| 1068 | Leavitt Lassen Oil Company | Leavitt, 1900 |
| 1069 | Leavitt Town of | Leavitt, 1913 |
| 1070 | Ledou, James Carl | Susanville, 1930s |
| 1071 | Lee, Frank | FGS, 1921 |
| 1072 | Lee, Henry | Susanville, 1930 |
| 1073 | Lee, William | Mt. Meadows, 1880 |
| 1074 | Leith, William | Janesville, 1860s+ |
| 1075 | Leonard, J.G. | Susanville, 1880s+ |
| 1076 | Leonard, John W. | Westwood, 1930 |
| 1077 | Lewis, Sylvester | Surprise Valley, 1871 |
| 1078 | Liberty Theater | Susanville, 1921 |
| 1079 | Liegan | |
| 1080 | Light, A.C. | Plumas County |
| 1081 | Likely | Modoc County |
| 1082 | Lincoln School | Susanville, 1920s+ |
| 1083 | Lindgren, Andrew | Susanville, 1890s |
| 1084 | Linton, William | Ash Valley, 1890s |
| 1085 | Lippincott, Joseph & Mary | Fall River Mills, 1880s |
| 2128 | Litch, Andrew | HLV, 1860s+ |
| 1086 | Litchfield | Lassen County |
| 1087 | Litchfield Reatly Co. | Belfast, 1922 |
| 1088 | Litterman, Fred | Susanville, 1916 |
| 1089 | Little High Rock Canyon | Washoe County |
| 1090 | Little Tom | Bieber, 1902 |
| 1091 | Little Valley | |
| 1092 | Little Valley School Distrcit | |
| 1093 | Lockharts Ferry | Fall River Mills |
| 1094 | Logan, Griffin | 1885 |
| 1095 | Loiselle, Joseph | Litchfield, 1914 |
| 1096 | Long, Bertha H. | Westwood, 1927 |
| 1097 | Long Family Group Sheets | |
| 1098 | Long, George W. | Lassen County, 1860s+ |
| 1099 | Long, John Crow | Lassen County, 1860s+ |
| 1100 | Long, John T. | Lassen County, 1860s+ |
| 1101 | Long, Richard W. | Susanville, 1936 |
| 1102 | Long, Thomas N. | Susanville, 1860s+ |
| 2187 | Long, Thomas & Kitty | Susanville, 1900+ |
| 1103 | Long Valley | |
| 1104 | Long Valley Agricultural Station | |
| 1105 | Long Valley Irrigation District | Long Valley, 1916 |
| 1106 | Long Valley School District | Doyle, 1864+ |
| 1107 | Lookout | Modoc County |
| 1108 | Lookout Junction | Great Northern RR |
| 1109 | Looper, James G. | Madeline Plains, 1880s |
| 2163 | Loosley, Foster & Mary | Pittville, 1923 |
| 1110 | Lopez, Benito | Susanville, 1920 |
| 1111 | Lopez, Carlos | Chilcoot, 1908 |
| 1112 | Lopez, Jesus | Susanville, 1929 |
| 1113 | Lost Meadows Golf Course | Richmond, 1920s |
| 1114 | Lothrop, George | Standish, 1924 |
| 1115 | Love, Arthur | Susanville, 1908 |
| 1116 | Loveland, Simeon | Dry Valley, 1870s+ |
| 2125 | Lovell, Jonathon | Susanville, 1860s+ |
| 2157 | Lowdy, Lydia & Jeff | Westwood, 1916 |
| 1117 | Lowry, Molly | Westwood, 1916 |
| 1118 | Lucerne School | Long Valley, 1918 |
| 1119 | Luther, Charles | Susanville, 1927 |
| 1120 | Luther G. Clark Co. | Madeline Plains, 1900s |
| 1121 | Lutzen, John | Westwood, 1920 |
| 1122 | Lybarger, John R. | Susanville, 1877 |
| 1123 | Lyons, Walter J. | Westwood, 1922 |
| 1124 | Maddron, James L. | Susanville, 1923 |
| 1125 | Madeline Meadows Land & Irrigation | |
| 1126 | Madeline Lumber Company | Madeline, 1906 |
| 1127 | Madeline Plains | |
| 1128 | Madeline School | |
| 1129 | Madigan, John | Rainbow, 1912 |
| 1130 | Mahan, James | Susanville, 1928 |
| 1131 | Maher, Michael | Plumas Junction, 1909 |
| 1132 | Main, John | Willow Creek Valley, 1880 |
| 1133 | Maizco, Benito | Maiden Flat, 1916 |
| 1134 | Malfa Bakery | Susanville, 1930s+ |
| 1135 | Mallory, James B. | Susanville, 1936 |
| 1136 | Manas, Sam | Westwood, 1921 |
| 1137 | Mankins, Wallace | Susanville, 1900s+ |
| 1138 | Manuel, Arthur | Westwood, 1920 |
| 1139 | Manzanita Chapter D.A.R. | Susanville, 1960s |
| 2130 | Mapes, Ira C. | HLV, 1880s+ |
| 1140 | Marchbank, Robert | Susanville, 1890s |
| 1141 | Marieni, Pietro | Constantia, 1913 |
| 1142 | Marker, Peter N. | Belfast, 1880s |
| 1143 | Markham, Bill | Susan River, 1890 |
| 1144 | Marks, Lafayette | Susanville, 1860s= |
| 1145 | Marquais, Billy | Susanville, 1926 |
| 1146 | Marr, George | Madeline, 1923 |
| 1147 | Marr, Thomas R. | Susanville, 1928 |
| 1148 | Marsh, Jennie & W.H. | Susanville, 1871 |
| 1149 | Marshall, Ohira | Susanville, 1925 |
| 1150 | Marstellar, Masillon | Susanville, 1870s+ |
| 2150 | Martial, A. | Litchfield, 1920s+ |
| 1151 | Martin, A. | Susanville, 1864 |
| 1152 | Martin, Edward A. | Susanville, 1900+ |
| 1153 | Martin, Fred D. | Susanville, 1902 |
| 2191 | Martin, H.J. | Buntingville, 1902 |
| 1154 | Martin, Jim | Bieber, 1927 |
| 1155 | Martin, Robert B. | Susanville, 1930 |
| 1156 | Martinez, Santiago | Westwood, 1928 |
| 1157 | Marty, Katie | Milford, 1900 |
| 1158 | Marysville & Susanville Railway | |
| 1159 | Marysville Daily Appeal | Honey Lake Valley, 1860s |
| 1160 | Massey, Thomas A. | Susanville, 1900+ |
| 1161 | Massey, William A. | Litchfield, 1914 |
| 1162 | Masten, Peter | HLV, 1870s+ |
| 1163 | Masters, Eugene | Bieber, 1933 |
| 1164 | Maxon, J.W. | Susanville, 1922 |
| 1165 | Maxwell, O.L. | Westwood, 1918 |
| 1166 | May, George F. | Susanville, 1940s |
| 1167 | Mayes, Roy D. | Susanville, 1920s |
| 1168 | Mayflower Mines | Janesville, 1917 |
| 1169 | Mazonie Mine | Long Valley, 1901+ |
| 1170 | McAllister, Joseph | Susanville, 1920 |
| 1171 | McAlpine Liquidating | Red River Lumber Co. |
| 1172 | McArthur, Roderick | Shasta County |
| 1173 | McArthur, Paul | Western Pacific, 1931 |
| 1174 | McCallister, Joseph M. | Janesville, 1890s+ |
| 1175 | McCarthy, Jesse | Dry Valley, 1913 |
| 1176 | McChristian, William | Susanville, 1890s+ |
| 2081 | McClane, Dan & Mary | Hayden Hill, 1870s+ |
| 1177 | McClary, Roy | Susan River, 1929 |
| 2131 | McClaskey, Calvin Family | Susanville, 1870s+ |
| 1178 | McClelland, C.P. | Big Valley, 1896 |
| 1179 | McClelland, Lynn | Susanville, 1933 |
| 1180 | McClelland, William M. | Janesville, 1860s+ |
| 1181 | McCormick, John | Doyle, 1927 |
| 1182 | McCrimmon, Alex | Susanville, 1892 |
| 1183 | McCrimmon, D. | Susanville, 1922 |
| 1184 | McCustian, James S. | Hayden Hill, 1880s |
| 2122 | McCutcheon, Hugh | Greenville, 1900 |
| 2162 | McCutcheon, William & Viola | |
| 2108 | McDermott, James Family | Milford, 1870s+ |
| 2056 | McDermott Properties | Milford, 1912 |
| 1185 | McDonald, Josephine | Madeline, 1926 |
| 1186 | McDonald, Russell | Nevada Reference |
| 1187 | McDonald School District | Madeline Plains |
| 1188 | McDow, George | Various |
| 1189 | McEvers, Hugh | Susanville, 1880s |
| 2080 | McFarling, Johnson Family | Hayden Hill, 1870s+ |
| 1190 | McGahey, Frank | Susanville, 1938 |
| 1191 | McGee, Ethel | Susanville, 1920s |
| 1192 | McGuire, Peter | Susanville, 1880 |
| 1193 | McKenzie, Lulu | Mt. Meadows |
| 2153 | McKenzie, Violet R. | Westwood, 1920 |
| 2090 | McKinsey, N.S. Family | Susanville, 1870s+ |
| 1194 | McKissick, Bejamin H. | Long Valley, 1860s |
| 1195 | McKissick Cattle Co. | Lassen County, 1915+ |
| 1196 | McKissick, Daniel | SecretValley, 1860s+ |
| 1197 | McKissick, Jacob | Long Valley, 1860s+ |
| 1198 | McKissick, John B. | SecretValley, 1860s+ |
| 1199 | McLane, Dan | Ash Creek, 1905 |
| 1200 | McMurphy, Abner | Janesville, 1864+ |
| 1201 | McMurtry, L.C. | HLV, 1850s |
| 1202 | McNamee, Wirt | Susanville, 1900s+ |
| 1203 | McNealy, H.E. | Susanville, 1872 |
| 1204 | McNeil, James | Susanville, 1913 |
| 1205 | McNett, Ruby | Susanville, 1931 |
| 2065 | McNiel, Thomas | Susanville, 1890s+ |
| 1206 | McQueen, Albert S. | NuBieber, 1937 |
| 1207 | McShane, Mildred | Susanville, 1903 |
| 1208 | McWilliams, Harry | Pittville, 1931 |
| 2091 | McWilliams, Mary | Big Valley, 1888 |
| 1209 | Meadows Realty Co. | Madeline, 1910 |
| 1210 | Meads, Otto W. | Susanville, 1928 |
| 1211 | Mears, E. | Susanville, 1975 |
| 1212 | Meikler, David | Susanville, 1917 |
| 1213 | Menefee, James B. | Willow Creek Valley |
| 1214 | Menedez, Nell | Westwood, 1924 |
| 1215 | Meredith, Sam | Westwood, 1937 |
| 1216 | Messman, Jacob | Johnstonville, 1871 |
| 1217 | Metcalf, Isaac | Dry Valley, 1880s+ |
| 1218 | Meyers, Fred | Susanville, 1922 |
| 1219 | Meyerwitz, Isadore | HLV, 1856 |
| 1220 | Meylert, G.W. | Janesville, 1880s |
| 1221 | Michel, Michel | Susanville, 1933 |
| 1222 | Mickey, Norman | Wendel, 1910+ |
| 1223 | Middleton, Jennie | Janesville 1930s |
| 1224 | Miers, Charles | Big Valley, 1880 |
| 1225 | Milani, Frank | Westwood, 1919 |
| 1226 | Miles, Harry | Crazy Harry Gulch, 1882 |
| 1227 | Milford | Lassen County |
| 1228 | Milford School District | Milford, 1864+ |
| 1229 | Miller, H. | Westwood, 1922 |
| 2096 | Miller, Myron | Native American History |
| 1230 | Miller, Thomas | Western Pacific, 1908 |
| 1231 | Milliken, Albert | Susanville, 1890s+ |
| 1232 | Milsap, Edgar | Susanville, 1933 |
| 1233 | Milwood Mercantile Co. | Susanville, 1927 |
| 1234 | Milwood Variety Store | Susanville, 1921 |
| 2147 | Minckler/Lax Families | HLV, 1870s+ |
| 1235 | Minnesota Historical Society | Westwood |
| 1236 | Missouri Bend School | Spoonville, 1870s+ |
| 1237 | Mitchell, Charles J. | Westwood, 1930s |
| 1238 | Model Laundry | Susanville, 1928 |
| 1239 | Modoc, Ben | Grasshopper Valley, 1911 |
| 1240 | Modoc County | Reference |
| 2210 | Modoc County Assessors | Biographies |
| 2074 | Modoc County Civilian Draft Registration | Reference |
| 1241 | Modoc County Historical Society | Reference |
| 1242 | Modoc County Obituaries | Reference |
| 1243 | Modoc Land & Livestock Co. | Likely, 1880s |
| 1244 | Moe, Hiram | Janesville, 1870s |
| 1245 | Monahan, William | Susanville, 1931 |
| 1246 | Monochi, G. | Westwood, 1920 |
| 1247 | Mollie Jim | Doyle, 1927 |
| 1248 | Monson, Charley | Janesville, 1914 |
| 1249 | Montgomery, Alfred | Nowhere, 1911 |
| 1250 | Montgomery, Myrtle | Susanville, 1921 |
| 1251 | Montgomery, William | Westwood, 1919 |
| 1252 | Monticola Club | Susanville, 1915+ |
| 1253 | Moody,R.F. | Susanville, 1860s+ |
| 1254 | Moon Valley | Madeline Plains |
| 1255 | Moonlight Gardens | Johnstonville, 1929 |
| 1256 | Mooratis, George | Susanville, 1923 |
| 1257 | Moore, Lindsey Hugh | Susanville, 1880s |
| 1258 | Moore, Thomas | Susanville, 1919 |
| 1259 | Mooso, Joseph | Surprise Valley, 1935 |
| 1260 | Moran Brothers | N-C-O Railroad |
| 1261 | Moran, M. | Susanville, 1926 |
| 1262 | Morford, James | Westwood, 1938 |
| 1263 | Morgan, Sadie | Susanville, 1920 |
| 1264 | Morley, Delbert L. | Bieber, 1933 |
| 1265 | Morning Glory Dairy | Susanville, 1950s |
| 1266 | Morris, George F. | Milford, 1870s+ |
| 1267 | Morris, Jennie | Milford, 1860s+ |
| 1268 | Morris, W.D. | Lookout, 1900 |
| 1269 | Morrisey, James | Susanville, 1929 |
| 1270 | Morton, Shelman B. | Milford, 1896 |
| 1271 | Morton, William | Tules, 1880s+ |
| 1272 | Morton, William B. | Standish, 1902 |
| 1273 | Mosier, F. | Susanville, 1865 |
| 1274 | Mount Lassen Fox Farm | Westwood, 1927 |
| 1275 | Mount Lassen Realty & Power | Westwood |
| 1276 | Mount Lassen Packing Co. | Susanville, 1926 |
| 1277 | Mount Lassen Transit Co. | Westwood, 1920s+ |
| 1278 | Mountain Meadows | Lassen County |
| 1279 | Mountain Meadows Copper Co. | Westwood |
| 1280 | Mountain Meadows School | Mt. Meadows, 1880s+ |
| 1281 | Mountain Mill Warehouse Co. | Litchfield, 1916 |
| 2190 | Mountain Tribune | Big Valley, 1881-1892 |
| 1282 | Mountain Valley Dairy Products | Big Valley |
| 1283 | Moyer, David | Susanville, 1927 |
| 1284 | Moyer, Urias | Janesville, 1880s |
| 1285 | Mulhern, John | Westwood, 1929 |
| 2132 | Mulkey, Luke | Alturas, 1880s+ |
| 1286 | Mullock, Ira P. | Westwood, 1918 |
| 1287 | Mulroney, John P. | Susanville, 1930 |
| 1289 | Mulroney, Thomas | Janesville, 1864+ |
| 1290 | Murphy, George | Surprise Valley, 1885 |
| 1291 | Murphy, John | Susanville, 1914 |
| 2097 | Murphy, John and Julia | Westwood, 1940s |
| 1292 | Murray, Mike | Bieber, 1931 |
| 1293 | Murrer, Jacob | Willow Creek Valley, 1870s+ |
| 1294 | Murrer vs. Barron | Willow Creek Valley |
| 1295 | Murry, Thomas | Westwood, 1918 |
| 1296 | Myers, Philip | Susanville, 1860s+ |
| 1297 | Myers Ranch | Big Valley |
| 1298 | Myrick, David | Reference |
| 1299 | Naliegh, W. H. | HLV, 1860s+ |
| 1300 | Nash, Alvah | Susanville, 1926 |
| 1301 | Nash, Charley | Constantia, 1903 |
| 2140 | Nash, L.A. | Big Valley, 1880s |
| 1302 | Nataqua Mercantile Co. | Susanville, 1920s |
| 1303 | Nataqua Territory | Politics |
| 1304 | Nathan & Schmidt | Susanville, 1884 |
| 1305 | Nathan, Marcus | Susanville, 1870s+ |
| 1306 | Native Americans | Baskets |
| 1307 | Native Americans | Bear Dance |
| 1308 | Native Americans | Maidu |
| 1309 | Native Americans | Reference |
| 1310 | Nave, Dr. Henry | Standish |
| 1311 | Naves, Jesse Martin | Susanville, 1928 |
| 1312 | Neale, Frances E. | Susanville, 1860s+ |
| 1313 | Neasham, Ralph | Janesville, 1864+ |
| 1314 | Neff, E. | Madeline, 1913 |
| 1315 | Nelson, Eugene | Stacy, 1910+ |
| 1316 | Nelson, George J. | Susanville, 1870s+ |
| 1317 | Nelson, Nils P. | Susanville, 1926 |
| 1318 | Nelson, Peter | Susanville, 1913 |
| 1319 | Neunaber, Henry | Westwood, 1935 |
| 1320 | Nevada-California Land & Livestock | Reference |
| 1321 | Nevada-California-Oregon Railroad | Reference |
| 1322 | Nevada-California-Oregon Realty | Reference |
| 1323 | Nevada-California-Oregon Telephone & Telegraph 1910 | Reference |
| 1324 | Nevada Historical Society | Reference |
| 1325 | Nevada Postal History | Reference |
| 1326 | Nevada State Jounral | Lassen Co. 1870s+ |
| 1327 | Nevada State Life Insurance Co. | Reference |
| 1328 | Nevada Street – 810 | Susanville |
| 1329 | NeverSweats | HLV, 1860s+ |
| 2109 | Newton, Eli | Janesville, 1877 |
| 1330 | Nichols, E.R. | Susanville, 1867 |
| 2208 | Nichols, Katherine | Susanville, 1967 |
| 1331 | Nightingale, L. | Pyramid Lake, 1860 |
| 1332 | Nilson, Ole | Susanville, 1933 |
| 1333 | Nix, John T. | Bieber, 1894 |
| 1334 | Nixon, Charles | Susanville, 1892 |
| 1335 | Nixon, Frank | Litchfield, 1920s |
| 1336 | Nobles, William H. | Nobles Trail |
| 1337 | Norman, Betty | Susanville, 1909 |
| 1338 | Norman, Lucy | Old Lucy |
| 1339 | Norris, Jack | Red Rock, 1920s |
| 1340 | Norris, William | Susanville, 1873 |
| 1341 | Northern California Livestock | Madeline, 1914 |
| 1342 | Northern Plumbing Co. | Susanville, 1915 |
| 2200 | Norvell, F.D. | West Lassen |
| 1343 | Nubieber | Lassen County |
| 1344 | Null, Freda | Bieber, 1917 |
| 1345 | Nunez, Jose | Westwood, 1926 |
| 1346 | Nye, Israel | Secret Valley, 1900s+ |
| 1347 | O.N.C. Stage Line | Alturas, 1930 |
| 1348 | Oak Avenue | Susanville, 1882 |
| 1349 | Oak Grove School | Milford, 1883+ |
| 1350 | Oakes & Philbrook | Susanville, 1900s+ |
| 1351 | Oaks, S.J. | Westwood, 1930s |
| 1352 | O’Canyon, Gabriel | Madeline, 1878 |
| 1353 | Odette, Fred | Horse Lake, 1916 |
| 1354 | O’Donnell, William | Mt. Meadows, 1899 |
| 1355 | O’Flangan, Father | Susanville, 1930s+ |
| 1356 | Okwa, Tom | Susanville, 1919 |
| 1357 | Old Providence Mill & Mining Co. | Hayden Hill |
| 1358 | O’Neil, James | 1931 |
| 1359 | One-O-One Ranch | Mt. Meadows |
| 1360 | One-O-One Ranch Cemetery | Mt. Meadows |
| 1361 | Orbell, George | Bieber, 1899 |
| 1362 | Oregon Shortline RR | Railroads |
| 2199 | Orland Place Names | Glenn County |
| 2110 | Otto, Anthony | Janesville, 1870s |
| 1363 | Owens, Arthur E. | Westwood, 1919 |
| 1364 | Owens, John S. | Hayden Hill |
| 1365 | Owens, Rail | Westwood, 1922 |
| 1366 | Pacey, Esther | Susanville, 1920s |
| 1367 | Pacific Coast Bear Club | Spoonville, 1900s |
| 1368 | Packwood, Carl Frank | Bieber, 1923 |
| 1369 | Packwood, James K. | Bieber, 1880s+ |
| 1370 | Page, Homer O. | Bieber, 1890s+ |
| 1371 | Painter, A.A. | Painters Flat, 1860 |
| 1372 | Painter, Benjamin B. | HLV, 1860s+ |
| 1373 | Painter, Samuel | HLV, 1860s+ |
| 1374 | Palmer, Joseph I. | Pittville, 1940 |
| 1375 | Palmer, Nina | Pittville, 1898 |
| 1376 | Palmer, Robert | Hayden Hill, 1906 |
| 1377 | Palmer, T.J. | Susanville, 1897 |
| 1378 | Panabaker, Charles | Bieber, 1897 |
| 1379 | Panama Pacific Exposition | Lassen County, 1915 |
| 1380 | Papoose Meadows Massacre | Eagle Lake, 1866 |
| 1381 | Pardee, J.E. | Susanville |
| 1385 | Parisotto, Pasquale | Susanville, 1937 |
| 1382 | Parker, Francis L. | Janesville |
| 1383 | Parker, Marion | Summit, 1865 |
| 1384 | Parman, Henry H. | NW Nevada |
| 1386 | Parrish, T. | Little Valley, 1912 |
| 1387 | Partridge, John C. | Susanville, 1860s+ |
| 1388 | Pastime Social Club | Susanville, 1922 |
| 2160 | Paul Bunyan Lumber Co. | Susanville, 1940s+ |
| 1389 | Pauper’s Hope Mine | Diamond Mountain, 1902 |
| 1390 | Payne, Eliza Southard | Big Valley, 1880s |
| 1391 | Payne, Nathan | Big Valley, 1927 |
| 1392 | Peachy, William D. | Susanville, 1870s+ |
| 1393 | Pearson, Thomas | Susanville, 1865 |
| 1394 | Peconum Creek | Willard Creek |
| 1395 | Peconum, Walter | Standish, 1910 |
| 2152 | Pefley, J.H. | Amedee, 1894-1924 |
| 1396 | Pegel, Eric | Bieber, 1920 |
| 1397 | Pendleton, Leonidas | Janesville, 1870s |
| 1398 | Penig, Anton | Susanville, 1879 |
| 2154 | Penland Family | Modoc County, 1912 |
| 1399 | Penman, George W. | Susanville, 1919 |
| 1400 | Penman, John T. | Lassen/Plumas |
| 1401 | Pennington, Ernest | Westwood, 1927 |
| 1402 | Pennsylvania Lumber Co. | Fruit Growers Supply |
| 1403 | People’s Market | Susanville, 1925 |
| 1404 | Pepper, Valetta | Westwood, 1921 |
| 1405 | Perkins, John R. | Gold Run, 1860s+ |
| 1406 | Perkiss, Charles W. | Big Valley, 1870s+ |
| 1407 | Persinger, Francis | Westwood, 1925 |
| 1408 | Peters, Howard | Susanville, 1926 |
| 1409 | Peterson, Chester H. | Susanville, 1916 |
| 1410 | Peterson, Matta | Susanville, 1926 |
| 2148 | Peterson, Peter | Big Valley, 1909 |
| 1411 | Petes Valley | Lassen County |
| 1412 | Petroche, Frank | Westwood, 1915 |
| 1413 | Peyser, Samuel | Susanville, 1870s+ |
| 1414 | Phelps, Rachel | Susanville, 1911 |
| 1415 | Philbrook Quinn & Co. | Susanville, 1923 |
| 1416 | Philliber, William R. | Big Valley, 1880s |
| 1417 | Phillips, Floy G. | Susanville, 1929 |
| 1418 | Pickard, Thomas W. | Susanville, 1860s+ |
| 1419 | Pierce, Clyde | Lassen Lumber, 1927 |
| 1420 | Pierce, Willard | Westwood, 1914 |
| 1421 | Pikes Point | Eagle Lake |
| 1422 | Pimental, Joe | Plumas Junction, 1913 |
| 1423 | Pine Grove School | Big Valley, 1880s |
| 1424 | Pine Street, North 10 | Susanville |
| 1425 | Pine Street, North 70 | Susanville |
| 1426 | Pinneo, Elgin | Susanville, 1924 |
| 1427 | Pioneer Mercantile Co. | Susanville, 1863+ |
| 1428 | Pioneer Plumbing & Heating | Susanville, 1920 |
| 1429 | Pioneer School District | Big Valley, 1870s |
| 1430 | Piper, Jack | Halls Flat, 1935 |
| 1431 | Pitt River School | |
| 1432 | Piute Creek | Natural History |
| 1433 | Piute Creek Railroad | Red River Lumber Co. |
| 1434 | Piute Lumber Company | Paul Bunyan, 1930s |
| 1435 | Pland Evans Co. | Westwood |
| 1436 | Pleasant Butte School | Big Valley, 1870s |
| 1437 | Plinco Mine | Doyle, 1919 |
| 1438 | Plumas Copper Mining Co. | Susanville, 1901 |
| 1439 | Plumas County | Reference |
| 1440 | Plumas National | Reference |
| 1441 | Podolsky, Henry | Susanville, 1930 |
| 2070 | Poindexter, Jefferson | Susanville, 1920s |
| 1442 | Pollock, Jackson | Janesville, 1920s |
| 1443 | Pon, Andre U. | Johnstonville, 1906 |
| 1444 | Pon, Jean | Johnstonville, 1917 |
| 1445 | Poplar School District | Tules, 1914+ |
| 1446 | Poppleton, James | Westwood, 1930s |
| 1447 | Porter, Walter | Lake Greeno, 1900 |
| 1448 | Post, Edwin | Pittville, 1915 |
| 1449 | Potato War | Milford, 1857 |
| 1450 | Powell, John | Susanville, 1896 |
| 1451 | Powers, Grace Lola | Bieber, 1883 |
| 1452 | Pranger, Rhyn | Bieber, 1937 |
| 1453 | Pratt, Willis L. | Honey Lake Valley, 1859 |
| 1454 | Prattville | Lake Almanor |
| 2133 | Pringle, James Family | Standish, 1890s+ |
| 1455 | Prior, Edward | Susanville, 1938 |
| 1456 | Proctor, J.W. | Westwood, 1921 |
| 1457 | Proctor, Melva | Johnstonville, 1921 |
| 1458 | Providence School | Big Valley, 1870s+ |
| 1459 | Pullen, Granville | HLV, 1870s+ |
| 1460 | Purcell, Joel | Susanville, 1874 |
| 1461 | Purdom, T.C. | HLV, 1860s+ |
| 1462 | Purdy | Long Valley |
| 1463 | Purdy Family Requests | Reference |
| 1464 | Purdy, Ira I. | Genealogy |
| 1465 | Purser School District | Wendel |
| 1466 | Quigley, Paul | Susanville, 1930 |
| 1467 | Quilty, Richard | Willow Creek Valley, 1871 |
| 1468 | Quincy Union | HLV, 1860s+ |
| 1469 | Quinn, Alice | Bieber, 1924 |
| 1470 | R & R Logging | Susanville, 1957 |
| 1471 | Rabbit Hole Sulphur Mines | Pershing County, NV |
| 1472 | Rager, Estelle | Susanville, 1922 |
| 1473 | Raker, Allen D. | Susanville, 1929 |
| 1474 | Raker, William | Milford, 1870s+ |
| 1475 | Ralls, Alexander | Big Valley, 1880s |
| 1476 | Ramelli, Emillio | Long Valley |
| 1477 | Ramsey, Clara Parrish | Hayden Hill, 1900s+ |
| 2057 | Ramsey Ditch | Susan River |
| 1478 | Ramsey Motor Sales | Susanville, 1927 |
| 1479 | Ramsey, Thomas A. | HLV, 1860s+ |
| 1480 | Randrup, Jacob | HLV, 1880s+ |
| 1481 | Ranker, Edward | Taylorsville |
| 1482 | Rankin, R.M. | Susanville, 1910+ |
| 1483 | Ranlett, Charles E. | Westwood, 1921 |
| 1484 | Rasich, Peter | Westwood, 1917 |
| 1485 | Rast, Frank | Amedee, 1898 |
| 1486 | Ravendale | Lassen County |
| 1487 | Ravendale Garage | Ravendale, 1928 |
| 1488 | Ravendale Station | Ravendale, 1955 |
| 1489 | Rayl | Lassen County |
| 1490 | Read, James D. | Susanville |
| 1491 | Reardon, Thomas F. | Wendel, 1917 |
| 1492 | Reavis, Andrew | Dixie Valley |
| 1493 | Reavis, William H. | Caribou Lake, 1931 |
| 1494 | Red Bluff Beacon | HLV, 1850s+ |
| 1495 | Red River Lumber Co. | Westwood |
| 1496 | Red Rock Creek | Madeline Plains |
| 1497 | Red Rock Creek Irrigation Dist. | Madeline Plains |
| 1498 | Red Rock Post Office | Madeline Plains |
| 1499 | Red Rock School District | Madeline Plains, 1897 |
| 1500 | Reed, Doris & Walter | Janesville, 1948 |
| 1501 | Reeder, Charles M. | Susanville, 1912 |
| 1502 | Reilly, William J. | F&L, 1912 |
| 1503 | Remick Construction Co. | Susanville, 1920 |
| 1504 | Reno Evening Gazette | Lassen Co. 1876-99 |
| 1505 | Repach, Kosta | Westwood, 1917 |
| 1506 | Republic Electrics | Susanville, 1935 |
| 1507 | Republic Grill | Susanville, 1925 |
| 1508 | Reservoir School District | Bird Flat, 1892 |
| 1509 | Reuck, Erma | Biography |
| 1510 | Reynolds, George W. | Susanville, 1900 |
| 1511 | Rex, Charles | Eagle Lake, 1874 |
| 1512 | Rhodes, John | Long Valley, 1880s |
| 1513 | Rice, Annie | Buntingville, 1880s+ |
| 1514 | Rice, William | Milford, 1860s |
| 1515 | Rich, John | Susanville, 1881 |
| 1516 | Richards, Minnie | Susanville, 1914 |
| 1517 | Richardson, Joseph & Ellen | Ash Valley, 1870s+ |
| 1518 | Richmond | Lassen County |
| 1519 | Richmond, Billings | Big Valley, 1885 |
| 1520 | Richmond School | Richmond, 1864+ |
| 1521 | Richtet & Justus | Susanville, 1890 |
| 1522 | Ricketts, R.A. | Big Valley, 1869 |
| 1523 | Riddle, John | Lassen Log Camp |
| 2058 | Ridenour Ranch | Gold Run, 1930s |
| 1524 | Ridgway, James D. | Johnstonville, 1870s+ |
| 1525 | Riley, Alvin | Susanville, 1928 |
| 1526 | Rising, Richard D. | Virginia City, NV |
| 1527 | Risely, Robert D. | Westwood, 1933 |
| 1528 | Rivera, Felipe | Westwood, 1934 |
| 1529 | Riverside Hospital | Susanville, 1921+ |
| 1530 | Riverside School | Honey Lake Valley |
| S | Roberts, Dave | Susanville, 1879 |
| 1532 | Roberts, Harry | Westwood, 1922 |
| 1533 | Roberts, Johnathon Chat | Long Valley, 1860s+ |
| 1534 | Roberts, Otie & Frank | Long Valley, 1898 |
| 1535 | Robinson, Charley | Milford, 1913 |
| 1536 | Robinson, Fred | Long Valley, 1891+ |
| 1537 | Robinson, George L. | Susanville, 1929 |
| 1538 | Robinson, Victor | N-C-O 1915 |
| 1539 | Robinson, William J. | Doyle, 1930 |
| 1540 | Robson, R.E. | Standish, 1921 |
| 1541 | Rockoff, Fred | Standish, 1919 |
| 1542 | Rodriquez, Margarito | Susanville, 1928 |
| 1543 | Rogish, Dan | Bieber, 1931 |
| 1544 | Rohner, Aloys | Westwood, 1927 |
| 1545 | Rois, Davis | Susanville, 1925 |
| 1546 | Rooney, Barney | Hayden Hill, 1902 |
| 1547 | Rooney, Joseph | Susanville, 1929 |
| 1548 | Roop County (numerous files) | Nevada |
| 1549 | Roop, Isaac | Susanville |
| 1550 | Roop Street, South #110 | Susanville |
| 2192 | Roop Street, South #250 | Susanville |
| 1551 | Roop’s Fort | Susanville |
| 1552 | Roop’s Land Register | HLV, 1850s+ |
| 1553 | Roop’s Sawmill | Susan River |
| 1554 | Roosevelt Swimming Pool | Susanville, 1936+ |
| 1555 | Root, J.B. | Susanville, 1903 |
| 1556 | Roseborough, Daniel | Likely, 1900 |
| 1557 | Rosebud | Pershing Co.,NV |
| 1558 | Roseberry, Thomas A. | Susanville, 1915 |
| 1559 | Roseberry, Viola | Susanville, 1892+ |
| 1560 | Ross, Frank M. | Hayden Hill, 1925 |
| 1561 | Ross, John | Janesville, 1879 |
| 1562 | Ross, Robert | Long Valley, 1859+ |
| 1563 | Roussell, Juniper Jim | Madeline Plains |
| 1564 | Rucker, Earl | Janesville, 1930s |
| 1566 | Ruf, Carl | Susanville, 1908 |
| 1567 | Ruf, Will | Susanville, 1902 |
| 1568 | Ruiz, Jose | Susanville, 1930 |
| 1569 | Rudolph Wittenbrock Estate | Susanville, 1905 |
| 1570 | Rush Creek Ranch | East Lassen |
| 1571 | Ryan, Arthur | Susanville, 1924 |
| 1572 | Ryan, Phillip | Susanville, 1925 |
| 1573 | S. Sanders & Bro. | Susanville, 1874 |
| 1574 | Sacred Heart Church | Susanville, 1869+ |
| 1575 | Sadler, Mrs. M.C. | Susanville, 1914 |
| 1576 | Said, Bartlett | Lassen County, 1860s+ |
| 1577 | Said Valley Reservoir | Lassen County |
| 1578 | Saint Paul’s Lutheran Church | Susanville, 1890+ |
| 1579 | Salindo, Josephine | Susanville, 1924 |
| 1580 | Saling, Charles | Amedee, 1898 |
| 1581 | Salisbury, Martha A. | Pittville, 1928 |
| 1582 | Sanchez, Infant | Susanville, 1927 |
| 1583 | Sanders, Joseph B. | Susanville, 1860s+ |
| 1584 | Sandon, Marsel | Susanville, 1925 |
| 1585 | Saralegui Land & Livestock | Long Valley, 1930s+ |
| 2083 | Saunders, Charles | Richmond, 1859 |
| 1586 | Sawtelle, Fred | Buffalo Meadows, NV |
| 2142 | Sawyer, J.J. | Susanville, 1874 |
| 1587 | Saxe, Edward | Susanville, 1931 |
| 1588 | Sayles, Mamie | Susanville, 1936 |
| 1589 | Schaeffer, William | Pittville, 1930 |
| 1590 | Schley, Allen Wilson | Susanville, 1930 |
| 1591 | Schnieder, Etta O. | Susanville, 1920s |
| 1592 | Scholl, W.W. | HLV, 1870s+ |
| 2144 | Schooling, Oliver | Big Valley, 1873 |
| 1593 | Schottell, R.D. | Wendel, 1920s |
| 1594 | Scott, Loyd B. | Westwood, 1927 |
| 1595 | Scott, William A. | Standish, 1908 |
| 1596 | Scottini, Innocenti | Gold Run, 1880s |
| 1597 | Secret Valley | Lassen County |
| 1598 | Secret Valley CCC Camp | Secret Valley, 1930s |
| 1599 | Secret Valley Development Co. | Secret Valley |
| 1600 | Secret Valley Land Co. | Secret Valley, 1916 |
| 1601 | Seeber, George | Madeline Plains, 1914 |
| 1602 | Segraves, William J. | Susanville, 1870s+ |
| 2077 | Selby, Emma & Thomas | Susanville, 1940s |
| 1603 | Sellick, Jake | Secret Valley, 1870s+ |
| 2194 | Sellick, James | Secret Valley, 1870s+ |
| 1604 | Senter, Anna B. | Clinton, 1903 |
| 1605 | Sewall, Hiram S. | Eagle Lake, 1874 |
| 1606 | Shaffer, Henry | Susanville, 1867 |
| 1607 | Shaffer Mountain | Natural History |
| 1608 | Shaffer, U.L. | Tules, 1860s |
| 1609 | Shanks, Fred J. | Susanville, 1897 |
| 1610 | Sharp, James P. | HLV, 1860s+ |
| 1611 | Shasta Courier | HLV, 1850s+ |
| 1612 | Shaw, Samuel | Madeline Plains, 1883 |
| 1613 | Shearer, Josiah | Honey Lake Valley |
| 2073 | Sherman, Elisha | Big Valley, 1880s |
| 1614 | Sherman, Samuel | Adin, 1900s |
| 1615 | Shewmaker, J.W. | Susanville, 1933 |
| 1616 | Shidler, Lataska | Constantia, 1929 |
| 1617 | Shinn, Arlow | Susanville, 1937 |
| 1618 | Shinn, Oliver | East Lassen |
| 1619 | Shoe Tree | Secret Valley |
| 1620 | Shoemaker, Bob | Susanville, 1928 |
| 1621 | Sholtz, Henry | Susanville, 1920 |
| 1622 | Shoub, Peter | Susanville, 1926 |
| 1623 | Shultz, Jay | Janesville, 1924 |
| 1624 | Shumway, B.E. | Horse Lake, 1869+ |
| 1625 | Shutts, Donald E. | Doyle, 1913 |
| 1626 | Sickerman, Gus | Susanville, 1921 |
| 2164 | Siebert, Charles | Susanville, 1887 |
| 1627 | Sierra Flume & Lumber Co. | 1870s |
| 1628 | Sierra Iron & Quincy RR | Railroads, 1881 |
| 1629 | Sierra Lumber Co. | Timber, 1904 |
| 1630 | Sierra Nevada Livestock Co. | Lassen County |
| 1631 | Sierra Packing Co. | Susanville, 1921 |
| 1632 | Sierra Plumbing & Heating | Susanville, 1920 |
| 1633 | Sierra Theater | Susanville, 1930s+ |
| 1634 | Sierra Valley & Mohawk RR | Railroads |
| 1635 | Sifford, Henry | HLV, 1870s+ |
| 1636 | Sifford, Roy | Drakesbad, 1900+ |
| 1637 | Silva, John | Hayden Hill, 1900 |
| 1638 | Silver Lake | Natural History |
| 1639 | Silver Star Lodge, I.O.O.F | Susanville, 1870s+ |
| 1640 | Simpson, Grace | Bieber, 1900 |
| 1641 | Simpson, William | Big Valley, 1870s |
| 1642 | Six Mile Massacre | Fall River Mills |
| 1643 | Skadan, Grace | Susanville, 1910 |
| 1644 | Skedaddle Dam | Skedaddle Creek |
| 1645 | Skedaddle Mountain | Natural History |
| 2072 | Slackford, E.T. Family | Janesville, 1870s |
| 2059 | Slate Creek | Grasshopper Valley |
| 1646 | Slater & McKinsey | Susanville, 1881 |
| 1647 | Slater, Adam E. | Ash Valley |
| 1648 | Slinger, Albert | Susanville, 1930 |
| 1777 | Smith, Albert A. | Richmond diary, 1862 |
| 1649 | Smith, Albert O. | Susanville, 1925 |
| 1650 | Smith Auto Company | Susanville, 1927 |
| 1651 | Smith, Benjamin H. | Big Valley, 1870s |
| 1652 | Smith, Bill B. | Westwood, 1935 |
| 1653 | Smith, Burton | Bieber, 1932 |
| 1654 | Smith, Charles A. | Leavitt, 1916 |
| 1655 | Smith, Charles S. | Susanville, 1896 |
| 1656 | Smith, Chauncey | Janesville, 1880s+ |
| 1657 | Smith, Fred F. | FGS, 1927 |
| 1658 | Smith, Ignatious M. | Susanville, 1872 |
| 1659 | Smith, Isaac W. | Wendel, 1920 |
| 1660 | Smith, J. Roy | Susanville, 1912 |
| 1661 | Smith, James B. | Westwood, 1938 |
| 1662 | Smith, John | Belfast, 1882 |
| 1663 | Smith, John Perry Mitchell | Tules, 1870s+ |
| 1664 | Smith, Katy & Sam | Susanville, 1865 |
| 1665 | Smith, Robert A. | Susanville, 1930 |
| 1666 | Smith Stage Line | Lassen County 1918 |
| 1667 | Smith, William | Westwood, 1919 |
| 1668 | Smith, William T. | Susanville, 1927 |
| 1669 | Smoke Creek Desert | Washoe County |
| 1670 | Smoke Creek Livestock Co. | Washoe County |
| 1671 | Smoke Creek Ranch | Washoe County |
| 1672 | Snider, Michael | Hayden Hill, 1870s+ |
| 1673 | Snook, Thaddeus | Westwood, 1916 |
| 2111 | Snyder, Henry Family | Johnstonville, 1870s+ |
| 1674 | Society of California Archivists | Reference |
| 1675 | Soldier Bridge School | Tules, 1865+ |
| 1676 | Solomon, Joseph | Westwood, 1917 |
| 1677 | Son, William | Susanville, 1865 |
| 1678 | Sons of Italy | Susanville, 1920s |
| 1679 | Sorrells, Albert | Westwood, 1924 |
| 1680 | Sorsoli Company | Susanville, 1921 |
| 1681 | Soule, Ezra P. | Susanville, 1870s+ |
| 1682 | South Lassen Shopper | Doyle |
| 1683 | Southard, Thomas W. | Big Valley, 1880s |
| 1684 | Southern Pacific Railroad | Railroads |
| 1685 | Southern Pacific Railroad | Strike, 1956 |
| 1686 | Sowveln Ranch | Ash Valley, 1928 |
| 1687 | Spalding Drug Co. | Susanville, 1865+ |
| 1688 | Spalding, Zetus N. | Susanville, 1860s+ |
| 1689 | Spanish Springs Ranch | Madeline Plains, 1870s+ |
| 1690 | Spanish Springs School | Madeline Plains, 1906 |
| 1691 | Spaulding Tract | Eagle Lake, 1914+ |
| 1692 | Spencer, E.V. & Lucy | Susanville, 1859+ |
| 1693 | Spencer, Harry | Susanville, 1930 |
| 2134 | Spencer, Moses T. | Janesville, 1870s |
| 1694 | Spickert, Jacob | Ash Valley, 1909 |
| 1695 | Spoon, P.J. | HLV, 1890s |
| 1696 | Spoonville | Honey Lake Valley |
| 1697 | Spraker & Harwood | Janesville, 1920s+ |
| 1698 | Stackpole, Thos. P. | Milford, 1882 |
| 1700 | Stamm, John | Susanville, 1923 |
| 1701 | Stampfli, Gustav | Susanville, 1966 |
| 1702 | Standish | Honey Lake Valley |
| 1703 | Standish Church | Standish, 1900s+ |
| 1704 | Standish Colony | Standish, 1897+ |
| 1705 | Standish Hall Association | Standish, 1907 |
| 1706 | Standish Harvesting Co. | Standish, 1902 |
| 1707 | Standish School District | Standish, 1900 |
| 1708 | Standish Water Company | Amedee, 1909 |
| 1709 | Stark, William T. | Milford, 1931 |
| 1710 | Staup, Alfred | Susanville, 1926 |
| 1711 | Stearns, William | Susanville, 1875+ |
| 1712 | Steffer Overland Co. | Susanville, 1921 |
| 2079 | Stenzel, August | Susanville, 1870s+ |
| 1713 | Stephens Ranch | Willard Creek |
| 2213 | Stevens, Alma & Clarence | Susanville, 1910s |
| 1714 | Stevens, Paul | Westwood, 1925 |
| 1715 | Stewart, George | Susanville, 1869 |
| 2122 | Stewart, Isaac M. | Johnstonville, 1870s+ |
| 1716 | Stewart, William | Susanville, 1894 |
| 1717 | Stickel, Cyrus H. | Providence, 1899 |
| 1718 | Stienberger, James M. | Milford, 1860+ |
| 1719 | Stiles, Lyman C. | Susanville, 1864+ |
| 1720 | Stiles, Lyman & May | Susanville, 1920s |
| 1721 | Stimac, Luke | Chilcoot, 1907 |
| 1722 | Stockton Beckwith Railroad | Railroads, 1902 |
| 1723 | Stockton, Henry C. | Devils Corral, 1863+ |
| 1724 | Stone, Elias & Norton | Ash Valley, 1870s+ |
| 1725 | Stones Cash Stores | Susanville, 1927 |
| 1726 | Stones Subdivision | Eagle Lake, 1960s |
| 1727 | Stout, Perry | Susanville, 1907 |
| 1728 | Stovall & Linscott | Cady Springs, 1863 |
| 1729 | Stover Ranch | Chester, 1859+ |
| 1730 | Straack, Fred | Susanville, 1922 |
| 2068 | Stratton, Gabriel | Grasshopper Valley, 1870s |
| 1731 | Streshly, Orlando | Richmond, 1856+ |
| 1732 | Strom, Mabel & William | Westwood, 1930s |
| 1733 | Strong, Franklin S. | Susanville, 1860s+ |
| 1734 | Stuart, A.J. | Big Valley, 1849 |
| 2152 | Studley, B.F. | Big Valley, 1870s |
| 1735 | Sturgiss, Cary | Long Valley, 1890s |
| 1736 | Suckow, Charles | Westwood, 1931 |
| 1737 | Sugadi Livestock Co. | Long Valley, 1952 |
| 2123 | Sugru, Michael | Johnstonville, 1870s+ |
| 1738 | Sullivan, Jeremiah | Westwood, 1919 |
| 1739 | Sullivan, Mike | Ash Valley, 1911 |
| 1740 | Sullivan, William A. | Westwood, 1933 |
| 1741 | Summers, Frank | Janesville, 1890s |
| 1742 | Summers, John H. | Standish, 1914 |
| 2069 | Summers, Thomas | Big Valley, 1876+ |
| 1743 | Summers, William T. | Lassen County, 1860s+ |
| 1744 | Summit & Vinton Cemeteries | Plumas County |
| 1745 | Summit Copper Mining Co. | Long Valley, 1910 |
| 1746 | Sunderland, Dye | Susanville, 1866 |
| 1747 | Sunderland, George | Westwood, 1928 |
| 1748 | Surprise Valley | Modoc County |
| 1749 | Surprise Valley Railroad | Railroads, 1916 |
| 1750 | Susan River | Natural History |
| 1751 | Susan River Ranch | Johnstonville |
| 1752 | Susanville | Susanville |
| 1753 | Susanville 20-30 Club | Susanville |
| 1754 | Susanville Airport | Susanville |
| 1755 | Susanville Athletic Club, 1920 | Susanville |
| 1756 | Susanville Border Station, 1920s | Susanville |
| 1757 | Susanville Bottling Works, 1923+ | Susanville |
| 1758 | Susanville Cemetery (2 files) | Susanville |
| 1759 | Susanville Census, 1884 | Susanville |
| 1760 | Susanville Census, 1900 | Susanville |
| 1761 | Susanville Centennial, 1964 | Susanville |
| 2214 | Susanville City Council | Reference |
| 1762 | Susanville City Dumps | Susanville |
| 1763 | Susanville Coca Cola Bottling Co. | Susanville |
| 1764 | Susanville Country Club | Wingfield Ranch, 1920s |
| 1765 | Susanville Creamery Co., 1900s+ | Susanville |
| 1766 | Susanville Depot | Southern Pacific, 1914+ |
| 1767 | Susanville Ditch Company, 1869 | Susanville |
| 1768 | Susanville Fort Bidwell Mail Contract, 1871 | Susanville |
| 1769 | Susanville Fraternal Hall, 1913 | Susanville |
| 1770 | Susanville Garage, 1922 | Susanville |
| 1771 | Susanville General Plan | Susanville |
| 1772 | Susanville Hall Association, 1899 | Susanville |
| 1773 | Susanville Hose Company 1885+ | Susanville |
| 1774 | Susanville Hotel Company, 1930s | Susanville |
| 1775 | Susanville Logging Company, 1957 | Susanville |
| 1776 | Susanville Logging Corporation, 1960 | Susanville |
| 1778 | Susanville Lumber Inc. 1957 | Susanville |
| 1779 | Susanville Marble Works, 1920s+ | Susanville |
| 1780 | Susanville Meat Company, 1927 | Susanville |
| 1781 | Susanville Meat Market, 1926 | Susanville |
| 1782 | Susanville Mining Company, 1939 | Susanville |
| 1783 | Susanville Motor Supply Company, 1934 | Susanville |
| 1784 | Susanville Natatorium, 1928 | Susanville |
| 2215 | Susanville Parks | Susanville |
| 1785 | Susanville Pine Company, 1941 | Susanville |
| 1786 | Susanville Plumbing & Heating, 1920 | Susanville |
| 1787 | Susanville Post Office | Susanville |
| 1788 | Susanville Ranch | Susanville |
| 1789 | Susanville School District, 1864+ | Susanville |
| 1790 | Susanville Seminary Association, 1874 | Susanville |
| 1791 | Susanville Social Club, 1921 | Susanville |
| 1792 | Susanville Steam Laundry | Susanville |
| 1793 | Susanville Water Company, 1870+ | Susanville |
| 1794 | Susanville Wood Company, 1927 | Susanville |
| 1795 | Sutherland, Angus | Westwood, 1929 |
| 1796 | Sutton, Jesse | Fall River Mills |
| 1797 | Swain, William | Lassen County, 1880s+ |
| 1799 | Swanson, Andrew | Westwood, 1926 |
| 1800 | Swanson, Axel | Hayden Hill, 1910 |
| 1801 | Swift, James H. | Susanville, 1917 |
| 1802 | Swiss Families | Lassen County |
| 1803 | Sylvanus, Jim | Susanville, 1924 |
| 1804 | Sylvester, Azel U. | Susanville, 1904 |
| 1805 | Talbott, Basil | Susanville, 1860s+ |
| 1806 | Tanner & Crill | Milford, 1875 |
| 1807 | Tanner, Dennis | Janesville, 1870s |
| 1808 | Tanner Family History | Tules |
| 1809 | Tanner Ranch | Tules |
| 1810 | Tanner Ranch Gun Club | Tules |
| 1811 | Tanner, T.C. | Susanville, 1931 |
| 1812 | Tanner, Verna Haley | Tules |
| 1813 | Tanner, William Martin | Tules |
| 1814 | Taylor & Randrup | Logging, 1940s |
| 1815 | Taylor, Ed | Wendel, 1918 |
| 1816 | Taylorsville Cemetery | Plumas County |
| 1817 | Termo Post Office | Termo |
| 2197 | Tehama Sheep Drives | West Lassen 1860s+ |
| 1818 | Termo School | Highland School |
| 1819 | Terrill, John M. | Susanville, 1882 |
| 1820 | Tew, Chinaman | Susanville, 1880 |
| 1821 | Thacker, Joel W. | Clinton, 1911 |
| 1822 | Theis, Philip | Big Valley, 1910 |
| 2135 | Theodore, John | Tules, 1870s+ |
| 1823 | Thomas, Ann | Susanville, 1924 |
| 1824 | Thomas Everett | Susanville, 1934 |
| 1825 | Thomas, George | Westwood, 1939 |
| 1826 | Thomas, John Gross | Susanville, 1880s |
| 1827 | Thompson, Edward | Wingfield Ranch, 1913 |
| 1828 | Thompson, George | Big Valley, 1880s |
| 1829 | Thompson, Michael T. | Susanville, 1889 |
| 1830 | Thompson, Nelson | Likely, 1880s+ |
| 1831 | Thompson, Peter J. | Susanville, 1920 |
| 1832 | Thompson, Stafford | Susanville, 1930 |
| 1833 | Thompson, Theodore C. | Mt. Meadows, 1904 |
| 1834 | Thorup, C.K. | Bird, Flat, 1905 |
| 1835 | Tipton Springs | Secret Valley |
| 1836 | Titherington, David | HLV, 1850s+ |
| 1837 | Todd, James J. | HLV, 1860s+ |
| 1838 | Totten, Peter R. | Pittville, 1924 |
| 1839 | Totten, Rachael | Pittville, 1885 |
| 1840 | Tregaskis, Edward | Cornish |
| 1841 | Tremain, Robert | Susanville, 1870s+ |
| 1842 | Triangle Rock | Smoke Creek |
| 1843 | Trichler, Rudolph | Susanville, 1932 |
| 2167 | Triplett, Abraham & Mary | Madeline Plains, 1910 |
| 2143 | Troxel, W.H. | Eagle Lake, 1880s+ |
| 1844 | True, Thaxter | Milford, 1870s+ |
| 1845 | Trussell, Henrietta | Johstonville, 1897 |
| 1846 | Tuan, Pietro | Westwood, 1928 |
| 1847 | Tule Confederary | Honey Lake Valley |
| 1848 | Tule Dad | East Lassen |
| 1850 | Tule Irrigation District | Tules, 1920s+ |
| 1849 | Tule Lake Land & Irrigation | Madeline Plains, 1910 |
| 1851 | Tunison, A.L. | Willow Creek Valley, 1864+ |
| 1852 | Tunison, A.L. | Diary, 1861 |
| 1853 | Tunison, A.L. | Diary, 1862 |
| 1854 | Tunison, A.L. | Diary, 1863 |
| 1855 | Tunison, A.L. | Diary, 1864 |
| 1856 | Tunison, A.L. | Diary, 1865 |
| 1857 | Tunison, A.L. | Diary, 1871 |
| 1858 | Tunison, A.L. | Diary, 1872 |
| 1859 | Tunison, A.L. | Diary, 1874 |
| 1860 | Tunison, A.L. | Diary, 1875 |
| 1861 | Tunison, A.L. | Diary, 1876 |
| 1862 | Tunison, A.L. | Diary, 1877 |
| 1863 | Tunison, A.L. | Diary, 1878 |
| 1864 | Tunison, A.L. | Diary, 1878 |
| 1865 | Tunison, A.L. | Diary, 1879 |
| 1866 | Tunison, A.L. | Diary, 1883 |
| 1867 | Tunison, Henry B. | Susanville, 1874+ |
| 1868 | Tunnel Spring | Secret Valley |
| 1869 | Turritin, R.C. | Constantia, 1906+ |
| 1870 | Tutts Meadow | Winnemucca, NV |
| 1871 | Tyler, Jeremiah | Milford, 1860+ |
| 1872 | Tyler, Thomas S. | Susanville, 1924 |
| 2170 | Uhl, Leonard | Camp 10 |
| 1873 | Umbras, Gust | Susanville, 1914 |
| 1874 | Union Ice & Fuel Delivery | Susanville, 1932 |
| 1875 | Union Street | Susanville |
| 1876 | Union Land & Livestock Co. | Madeline Plains, 1909 |
| 1877 | United Methodist Church | Susanville, 1860+ |
| 1878 | United States v. H.H. Yard | Railroads |
| 1879 | United States Geologic S. | Place Names |
| 1880 | Unknown Man | Grasshopper Valley, 1875 |
| 1881 | Unknown Man | Honey Lake, 1931 |
| 1882 | Unknown Man | Milford, 1906 |
| 1883 | Unknown Man | Flanigan, 1918 |
| 1884 | Unknown Man | Long Valley, 1904 |
| 1885 | Unknown Man | Susan River, 1914 |
| 1886 | Unknown Infant | Susanville, 1918 |
| 1887 | Unknown Man | Susanville, 1928 |
| 1888 | Unknown Man | Westwood, 1926 |
| 1889 | Unknown Man | Westwood, 1922 |
| 1890 | Unknown Infant | Westwood, 1936 |
| 1891 | Unknown Man | Susanville, 1922 |
| 1892 | Unknown Man | Susanville, 1928 |
| 1893 | Unknown Man | Doyle, 1911 |
| 1894 | Unknown Infant | Westwood, 1928 |
| 1895 | Unknown Man | Westwood, 1929 |
| 1896 | Uribe, Jose | Susanville, 1950s |
| 1897 | Utah Construction Co. | Railroads |
| 1898 | Van Buren, Abner | Susanville, 1870s |
| 1899 | Van Debogart, Roy | Westwood, 1915 |
| 2211 | Vandervate, Eldsworth | Westwood, 1940s |
| 1900 | Van Houten, Clifford | Norvell, 1931 |
| 1901 | Van Loan, Kenneth | Likely |
| 1902 | Van Lueven, Elizabeth | Tules, 1879 |
| 1903 | Van Tennen, Herman | Westwood, 1938 |
| 1904 | Vance, Gertrude | Baxter Creek, 1934 |
| 1905 | Vanetti, Henry | Mt. Meadows, 1900 |
| 1906 | Vary Ladue | Varyville, NV |
| 1907 | Veith, Edward | Susanville, 1923 |
| 1908 | Vellenworth, Bill | Susanville, 1920s |
| 1909 | Vernon, Sarah | Susanville, 1924 |
| 1910 | Vial, Giovanni | Susanville, 1926 |
| 1911 | Vickrey, Walter | Rice Canyon, 1912 |
| 1912 | Villanueva, E. | Susanville, 1931 |
| 2095 | Vogt, Peter H. | Richmond, 1860s+ |
| 1913 | Vosberg, Abraham | Susanville, 1875 |
| 1914 | Vya | Washoe County |
| 1915 | Waite, F.M. | Hayden Hill |
| 1916 | Waland Lumber Co. | Red River Lumber Co. |
| 1917 | Waldron, Horace | Susanville, 1893 |
| 1918 | Wales, George F. | Milford, 1932 |
| 1919 | Walker, Fletcher | Westwood, 1923 |
| 1920 | Walker, Godfrey | Big Valley, 1880s+ |
| 1921 | Walker Haines Lumber Co. | |
| 1922 | Walker Hovey Co. | Red River Lumber, 1941 |
| 1923 | Walker Investments | Red River Lumber, 1926 |
| 1924 | Walker, John M. | Big Valley, 1870s+ |
| 2207 | Walker Mine | |
| 1925 | Walker, Sanford | Madeline, 1919 |
| 1926 | Walker, William | Susanville, 1865 |
| 1927 | Walsh, Peter | Bieber, 1903 |
| 1928 | Walsh, William | Susanville, 1928 |
| 2195 | Wallin, Elton Bridell | Susanville, 1914 |
| 1929 | Walson, John | Bieber, 1931 |
| 1930 | Walson, August | Bieber, 1933 |
| 1931 | Walson, Sanders | Bieber, 1926 |
| 2158 | Walter, Charles & Louise | Susanville, 1920s |
| 2086 | Wanzer, Irene | Susanville, 1930s |
| 1932 | Ward, Jack | Susanville, 1919 |
| 1933 | Ward, John S. | Susanville, 1850s+ |
| 1934 | Ward Lake Ditch | Standish/Litchfield |
| 1935 | Ward Land & Stock Co. | Madeline Plains, 1890s |
| 1936 | Ward, Thomas | Westwood, 1940s |
| 1937 | Ware, David | Tules, 1880s |
| 1938 | Ware, William | Westwood, 1928 |
| 1939 | Warm Springs School | Long Valley, 1890s |
| 1940 | Washburn, Henry | Milford, 1860s+ |
| 1941 | Washburn, Susanna | Milford, 1880 (diary) |
| 1942 | Washington School District | Big Valley, 1880s+ |
| 1943 | Washoe County Bank | Nevada |
| 1944 | Washoe Lassen Mining Co. | Smoke Creek |
| 1945 | Washoe, Willie | Susanville, 1904 |
| 1946 | Wasson, Warren | Long Valley, 1859 |
| 1947 | Wathen, William | Susanville, 1870s |
| 2117 | Watkins, Charles Webb | Westwood, 1930 |
| 1948 | Watson, John W. | Westwood, 1930 |
| 1949 | Watson, Milton | Big Valley, 1870s+ |
| 1950 | Watson, Thomas | Honey Lake Valley, 1850s+ |
| 2136 | Way, Arad | Big Valley, 1870s+ |
| 1951 | Weatherlow, William | Honey Lake Valley, 1850s+ |
| 1952 | Weaver, Chris & Mary | Susanville, 1865 |
| 1953 | Webb, Sam & Grace | Eagle lake, 1940s+ |
| 1954 | Webster, Hazzard | Eagle Lake, 1873 |
| 1955 | Wedekind, George | Susanville, 1860s |
| 1956 | Weed, Edward A. | Susanville, 1870s |
| 1957 | Weincke, Henry | Susanville, 1925 |
| 1958 | Weisenberg, Ben | Hayden Hill, 1901 |
| 1959 | Welden, James | Susanville, 1926 |
| 1960 | Wells, Clayton | Westwood, 1925 |
| 1961 | Wells Fargo Bank | Susanville, 1870s |
| 2166 | Wells, Michael | Oroville, 1956 |
| 1962 | Wemple, Claude | Memories of a Rancher |
| 1963 | Wemple, Claude | Papers |
| 1964 | Wemple, John B. | Susanville, 1931 |
| 1965 | Wemple, Joseph C. | Milford, 1860s+ |
| 1966 | Wemple, Lowell S. | Milford, 1925 |
| 1967 | Wemple, Neil | Memories of a B29 |
| 1968 | Wendel | Lassen County |
| 1969 | West, Truman | Plumas Junction, 1916 |
| 1970 | Western Land & Power Co. | Lake Almanor, 1915 |
| 1971 | Western Pacific Railroad | Railroads |
| 1972 | Westside Irrigation Co. | Big Valley, 1885 |
| 1973 | Westwood | Lassen County |
| 1974 | Westwood | Westwood, 1930 |
| 1975 | Westwood Cemetery | Westwood |
| 1976 | Westwood Census | Westwood, 1916 |
| 1977 | Westwood Chipmunk | Westwood, 1920s |
| 1978 | Westwood Lumber Strike | Labor History |
| 1979 | Westwood School | Westwood, 1914 |
| 1980 | Westwood Sugar Pine | Westwood |
| 1981 | Whalen v Streshly | Willow Creek Val. 1920s |
| 1982 | Wheeler Land & Stock Co. | Washoe County, 1892 |
| 1983 | Wheeler, Michael | Minnesota |
| 1984 | Whipple, Edwin | Susanville, 1928 |
| 1985 | White, Allen | Wingfielld Ranch, 1913 |
| 1986 | White, Joe | Standish, 1907 |
| 1987 | White, M.G. | Susanville, 1867 |
| 2137 | Whitehead, John | Tules, 1880s+ |
| 1988 | Whitford, Alfred | Susanville, 1867 |
| 1989 | Whitman, Laurel | Westwood, 1925 |
| 1990 | Whitten, Ina | Janesville, 1906 |
| 1991 | Whittier, William | Modoc Co., 1880s |
| 1992 | Widley, Charles A. | Westwood, 1915 |
| 1993 | Wigley, Dora | Westwood, 1917 |
| 1994 | Widow Valley | Lassen County |
| 1995 | Wilbur, Charley | Honey Lake, 1914 |
| 1996 | Wilbur, Francis | Milford, 1870s+ |
| 1997 | Wilcox, Hiram | Susanville, 1882 |
| 1998 | Wilcoxson, E.H. | FGS Co., 1922 |
| 1999 | Wild Horses | Natural History |
| 2000 | Wild Horse Mines | Smoke Creek, NV |
| 2052 | Wilkerson, Bowles | Susanville, 1915 |
| 2053 | Wilkeson, John Doe | Susanville, 1930 |
| 2212 | Wilkins, Emma | Johnstonville, 1952 |
| 2054 | Wilkinson, Henry | Susanville, 1903 |
| 2055 | Willard, C.A. | Willard Creek, 1870s+ |
| 2001 | Williams, Chauncey | Big Valley |
| 2002 | Williams, E.N. | Susanville, 1914 |
| 2003 | Williams, Elmer | Dry Valley |
| 2004 | Williams, Mary | Devils Corral, 1908 |
| 2005 | Williams, Mattie | Bieber, 1920 |
| 2006 | Williams, Morgan | Susanville, 1860s+ |
| 2007 | Williams, William R. | Willow Creek Val. 1870s+ |
| 2008 | Williamson, Banks | Bieber, 1905 |
| 2009 | Willis, Minnie | Plumas Junction, 1917 |
| 2010 | Willow Creek Valley | Lassen County |
| 2011 | Willow Creek School | Willow Creek Valley |
| 2012 | Willow Ranch | Modoc County |
| 2013 | Wilson, Harry | Little Valley, 1930 |
| 2014 | Wilson, Joseph | Hayden Hill, 1903 |
| 2015 | Wilson, Kate | Providence, 1919 |
| 2016 | Wilson, Thomas W. | Susanville, 1920 |
| 2017 | Winchell & Phillips | Buntingville, 1884 |
| 2018 | Winchell, Hiram | Buntingville, 1897 |
| 2019 | Winchester, Elliott | Susanville, 1860s+ |
| 2020 | Wingfield, George | Richmond, 1910+ |
| 2021 | Winkle, Benjamin | Doyle, 1916 |
| 2022 | Winn Sawmill | Lassen Lumber & Box |
| 2023 | Winslow, A.C. | Standish, 1900s+ |
| 2024 | Winslow, Charles | Spoonville, 1905 |
| 2025 | Winslow, P.J. | Susanville, 1919 |
| 2026 | Winters, Philip | Milford, 1874 |
| 2027 | Withers, George | Leavitt Lake, 1938 |
| 2028 | Wood, Denis | HLV, 1870s+ |
| 2029 | Wood, Wilbur | Bieber, 1900 |
| 2030 | Woodin, Douglas | Hayden Hill, 91925 |
| 2031 | Woodmansee, C.D. | Big Valley, 1870s+ |
| 2032 | Woodstock Dam | Susan River, 1860+ |
| 2033 | Woodstock, Loyal | Susanville, 1860+ |
| 2034 | Wooldridge, Jesse | Richmond, 1870s+ |
| 2035 | Woolen, J.R. | Milford, 1904 |
| 2184 | Worley, Jesse C. | Susanville, 1900+ |
| 2138 | Worm, A.W. | Susanville, 1860+ |
| 2139 | Wrede, Frank | Standish, 1890s+ |
| 2036 | Wrigley, T.F. | Westwood, 1916 |
| 2037 | Wright, A.S. | Long Valley, 1860+ |
| 2038 | Wright, George W. | Clinton, 1880s+ |
| 2039 | Wright, Eugene | Westwood, 1916 |
| 2040 | Wright, Fred | Susanville, 1920s |
| 2041 | Wright, James C. | Amedee, 1915 |
| 2042 | Wyrick, William | Bieber, 1912 |
| 2043 | Yancey, Levi | Modoc, 1880 |
| 2044 | York J.C. | Grasshopper Valley |
| 2045 | Youman, A.W. | Westwood, 1928 |
| 2046 | Young, Charles | Pittville |
| 2047 | Young, Henry | Susanville, 1874 |
| 2153 | Zalba Family | Susanville, 1920s |
| 2048 | Zamboni, Mike | Susanville, 1927 |
| 2049 | Zimmerman, Fred | Susanville, 1905 |
| 2050 | Zoller, Henry | Westwood, 1920s |
| 2051 | Zwiebel, Lee | Susanville, 1930s |