Jackie Robinson broke baseball's color barrier April 15, 1947
Jackie Robinson 1947 debut ticket stub sells for record $480K
2013 LAD Media Guide, PDF, Major League Baseball
Uncle Mike's Musings: A Yankees Blog and More: October 7, 1950
After Jackie: April 16th, 1947, IBWAA
The greatest barrier-breaking African-American moments in MLB
Jackie Robinson - Wikipedia
The greatest barrier-breaking African-American moments in MLB
The greatest barrier-breaking African-American moments in MLB
The Breakthrough: In May 1947 Jackie Robinson proved he belonged