War Bond Game Tickets
Nine out of 10 baseball players served in WWII. To support the war effort, the major league hosted "War Bond Games" to boost the sale of war bonds.
With the lack of male ballplayers serving in the military, women stepped up to the plate.
I wrote about this history in a story about a reenactment of the All-American Girls Professional Baseball League: "No Madonna. No Geena Davis. But Still in a League of Their Own."