April 17, 1947: Jackie Robinson records his first National League hit for Dodgers – Society for American Baseball Research
Jackie Robinson opened MLB's doors to people of color 74 years ago on April 15, Richmond Free Press
Jackie Robinson - Wikipedia
Newspaper columns and articles about Jackie Robinson's debut with the Dodgers in 1947
100 Years Ago: Jackie Robinson was Born - Cooperstown Cred
Jackie Robinson Day, when MLB players can wear No. 42
The Rest of 42's Story: Jackie Robinson as Civil Rights Activist – Education Updates
Jackie Robinson in 1947: Debut with the Dodgers – Society for American Baseball Research
The Breakthrough: In May 1947 Jackie Robinson proved he belonged in the bigs - Sports Illustrated
Lone Ticket from Jackie Robinson's First Dodger Appearance Set for Auction
Jackie Robinson in 1947: Debut with the Dodgers – Society for American Baseball Research
The Sports Report: Team of Jackie Robinson had no African American players on roster during season - Los Angeles Times
Baseball Hall of Fame Will Create New Exhibit on Race - The New York Times