THE NEGRO LEAGUES: A BRIEF HISTORY –
How spring-training baseball helped integrate Arizona 70 years ago
Column: Remembering Jackie Robinson in town where it started
Baseball Integration Timeline, by John Thorn
215 Montague Street, by John Thorn
Baseball Integration, 1947-1986 – Society for American Baseball Research
The first integrated Little League Baseball game in the Deep South
Black players in organized white baseball in the pre-integration era - Beyond the Box Score
How The Negro League's Homestead Grays Shaped D.C. Baseball
Baseball - Integration, Jackie Robinson, MLB
Justice for the Negro Leagues Will Mean More Than Just Stats - The New York Times