When occured: 

Sat, 1943-02-20

On February 20, 1943, Chicago Cubs owner Philip Wrigley and Brooklyn Dodgers executive Branch Rickey draw up the charter for the All-American Girls Softball League, which will eventually become the All-American Girls Professional Baseball League (AAGPBL). The league, originally conceived in the belief that the major leagues would suspend play because of World War II, will operate from 1943 to 1954. After struggling through poor attendance in its early seasons, the league will draw over one million fans in 1948.