The Only Day MLB Players Can Wear No. 42 » Britannica
Jackie Robinson: Before the Dodgers, a 4-sport star at UCLA
The Jackie Robinsons of every sport - The Washington Post
Baseball and Civil Rights: Jackie Robinson's Activist Impact, Antiques Roadshow
How Jackie Robinson's overlooked season in the Negro Leagues shaped his historic path to Major League Baseball
WWI Soldier Helped Desegregate Baseball - World War I Centennial
HeroVet Jackie Robinson, U.S. Army & Brooklyn Dodgers
Jackie Robinson & Civil Rights – Education Updates
Opinion: Jackie Robinson was a true sports hero : NPR
Jackie Robinson – Society for American Baseball Research
Jackie Robinson's Career in the Army
Crossing the Color Line: Jackie Robinson's Early Career, Baseball