How Larry Doby broke color barrier in American League
Negro League Baseball, Black Community, and The Socio-Economic Impact of Integration – Society for American Baseball Research
The Hall of Fame Has Grown Quiet on Negro Leagues Inductees - The New York Times
Matt Horn: History stays same, but MLB finally includes Negro Leagues
Luke Easter: The Gold Rush of 1949 and What Might Have Been
MLB officially recognizes Negro Leagues as major league baseball
Opinion Why the Negro Leagues will never fully be integrated into Major League Baseball - The Washington Post
Leo Durocher – Society for American Baseball Research
Baseball Integration Timeline, by John Thorn
On Apr 16, 1945: Major League Baseball Refuses to Integrate After Black Players Were Abused