Of course, this was one of those scenarios where a week later after I posted about the dairy history, I came across an example of the material that can be found. It just takes a lot of sleuthing.
In a February 1926 Lassen Farm Bureau news report had this: “R.S. Raven of the cow testing association reports that the FGSCo had one cow this month that produced over 60 pounds of butterfat, another produced 50 pounds, five over 40 pounds and eight over 30 pounds for the month. Mr. O”Kelley states that these cows have been fed on silage and grain.”
In March 1926 Lassen Farm Bureau new report had this: “The Red River Lumber Company had 58 cows that produced over 30 pounds of butterfat this month. Fifteen of these produced over 40 pounds of fat, 5 produced over 50 and one cow 78 pounds. E.G. Scammon states the company is milking 175 cows at present.