Public domain
Holstein cow at Casa Grande Valley Farms. Pinal County, Arizona. She yielded 497 pounds of butterfat in 370 days. On test 77 cows of the Casa Grande Farm yielded an average of 386 pounds of butter fat in 365 days. This was the highest in the state for that many cows
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Credit lineHolstein cow at Casa Grande Valley Farms. Pinal County, Arizona. She yielded 497 pounds of butterfat in 370 days. On test 77 cows of the Casa Grande Farm yielded an average of 386 pounds of butter fat. 1940-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.