The five players who broke MLB's color barrier in 1947 - Beyond the Box Score
Jackie Robinson: Breaking the Color Line in - Crabtree Publishing
Jackie Robinson, known for breaking baseball's color barrier, was a towering figure in American history - The Washington Post
Breaking the Color Line: 1940 to 1946 | Baseball, the Color Line, and Jackie Robinson | Articles and Essays | By Popular Demand: Jackie Robinson and Other Baseball Highlights, 1860s-1960s | Digital Collections | Library of Congress