How a trio of pioneers gave rise to racial integration in the NBA
Jackie Robinson: Biography, Baseball Player, Activist
IWU baseball saw few Black players, integration issues for decades
Baseball color line - Wikipedia
Nashville Stars Honor Baseball's Past by Focusing on the Future - The New York Times
Pre-Negro Leagues stars laid the foundation for integration
Bob Watson, All-Star slugger and executive, dies at 74
Integrating Baseball, before Jackie Robinson - JSTOR Daily
The Red Sox Were The Last Baseball Team To Integrate. This Is How It Happened
Before Jackie: Baseball's Color Line – Society for American Baseball Research
Timeline: Key moments, milestones in Jackie Robinson's life
Baseball Integration Timeline, by John Thorn
With deliberate speed, the 1950s saw the reintegration of the white major leagues