From about 1922 the typical load of oranges shipped from Californian was 462 crates. This was based on an application by the California Citrus League approved by the Trans-Continental Freight Bureau.
From sometime in 1942 to sometime in 1947 the Office of Defense Transportation ordered, probably through the ICC, that refrigerator cars were to be loaded with a minimum of 693 crates. Due to the high amount of damage to loads, the order subsequently was modified to reduce the amount to a minimum of 561 crates. The order was completely rescinded in 1947 and the 462 crate standard re-emerged.
Can anyone tell me the effective dates and the Service Order numbers related to these war time loading requirements?