Major League Baseball's Popularity During WWII
During World War II, baseball players wore two kinds of uniforms - The Washington Post
Major League Baseball - Wikipedia
Should Sports be Stopped During the War?, The National WWII Museum
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The Great American Pastime (1956): Hollywood, Little League, and the Post-World War II Consensus – Society for American Baseball Research
Baseball and World War I
Barrier Breakers Timeline - NLBM
Play Ball, Eh? - Canada's History
Negro league - African American, Baseball, History
Baseball’s popularity in the years immediately following World War II resulted in a record number of minor leagues in operation while amateur and
The Berkeley Spinners: A Baseball History 1948-1961
Baseball, History, Definition, & Facts