MLB History: Jackie Robinson Day Announced
Former Tiger hurler Art Herring pitched to Babe Ruth and Jackie Robinson - Vintage Detroit Collection
Jackie Robinson wasn't the only Black player to break barriers in MLB
The Breakthrough: In May 1947 Jackie Robinson proved he belonged in the bigs - Sports Illustrated
JRR in Detroit — Historic Hamtramck Stadium
Crossing the Color Barrier: Jackie Robinson and the Men Who Integrated Major League Baseball - LA84 Foundation
May 13, 1947: Jackie Robinson makes first appearance in Cincinnati with Dodgers – Society for American Baseball Research
After Jackie Robinson, MLB integration was halting - The Washington Post
Green: Jackie Robinson's dynamic baseball skills often overlooked
The Breakthrough: In May 1947 Jackie Robinson proved he belonged in the bigs - Sports Illustrated
Dodgers trip Braves, 5-3, in Jackie Robinson's first game in the major leagues – New York Daily News