There is a 1941 MP & Co. set. You can make a fair argument either way, Pre or during WWII. American trading cards were effected by US entering the war (paper stock shortages and very few during WWII baseball card sets), which is in part why the cutoff is when the US entered the war. Baseball cards history is about stages related to US history, such as US tobacco monopoly and breakup (rise and fall of tobacco cards), WWII, etc-- which is why the cards are in part categorized by American history. American collectors know the war started in 1939 Europe, and I'm sure some call it as a 'during war' set.
Also, there are so few WWII baseball cards that they are often dropped in the Pre-War category out of convenience anyway.
Last edited by drc; 10-09-2009 at 12:53 AM.
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