After nearly 100 years after Lassen County was created in 1864, some historians thought it really should have been named Roop County. However, that would have been problematic, since across the stateline in Nevada was Roop County. Nevada officials were critical of the Roop name, J. Wells Kelly, who compiled the First Directory of Nevada Territory  questioned the choice of the name and stated that it should have been named Lassen County. Kelly wrote: “Every dictate of gratitude and propriety, suggested the name of Peter Lassen—the noble old pioneer who, the first to enter, finally lost his life in exploring these wild regions—as that which should have been bestowed upon the county.” The after effects of the Sagebrush War reduced Roop County to a long narrow strip of land from Pyramid Lake to the Oregon border. Since it was a sparsely settled territory, with no town, the Nevada Legislature, on February 18, 1864, attached it to Washoe County for judicial and revenue purposes. On January 16, 1883, it was officially abolished and made a part of Washoe County