Baseball's Racial Makeup to Be Studied - The New York Times
Jackie Robinson 75: Baseball's Re-Integration – Society for American Baseball Research
A look back at Jackie Robinson on the 75th anniversary of breaking the color barrier
Jackie Robinson – Society for American Baseball Research
Honoring the 75th anniversary of Jackie Robinson's Integration into Organized Baseball — Part 1, by Mark Everett Kelly
Jackie Robinson 75: Baseball's Re-Integration – Society for American Baseball Research
The Effects of Integration, 1947-1986 – Society for American Baseball Research
Jackie Robinson, Athlete and Activist
Jackie Robinson 75: Baseball's Re-Integration – Society for American Baseball Research
Racial Integration in Major League Baseball, Jackie Robinson
New DC exhibit celebrates 75 years since Jackie Robinson's integration of MLB - WTOP News
After Jackie Robinson, MLB integration was halting - The Washington Post
Jackie Robinson Integrates Major League Baseball 75 Years Ago #OnThisDay – Good Black News
Jackie Robinson in 1946: Integrating the Minor Leagues – Society for American Baseball Research
Jackie Robinson Broke the Color Barrier, Later Immortalized on U.S. Coinage