Economic Research Institute Study paper
Utah State University
Milk marketing has changed over the years, and so have the functions performed by fluid milk handlers and dairy cooperatives. In the 1930s the typical situation was for local fluid milk processors to perform all the marketing functions starting with picking up the milk from independent dairymen at the farm, and ending with its delivery to the customer's doorstep. In most instances milk was picked up, processed and delivered daily. Each handler had to coordinate and balance his own milk supply and use. With sales about the same every day of the week, the major problem was balancing seasonal supplies during the flush production period.
Christensen, Rondo A.; Petterson, Douglas E.; and Swainston, Allen H., "The Function and Cost of Market Milk Reserves and Balanceing Supply with Demand" (1979). Economic Research Institute Study Papers. Paper 384.