Philip K. Wrigley invented the womens league in 1943. It lasted for 11 years all the way from 1943 to 1954. The reason this league was created was because during WWII many MLB players were drafted into the army. Some of these players were:
All of these players ended up being in the Hall of Fame. A name that you may not have heard before is Dorothy Kamenshek. Dorothy was considered the best womens league player. The league broke apart because of financial issues and television had been created and going to a baseball game in person just wasn't the way to watch baseball at the time.