Before Jackie: Baseball's Color Line – Society for American Baseball Research

This is why baseball is so white - Vox

Before Jackie: Baseball's Color Line – Society for American Baseball Research

Baseball, the Color Line, and Jackie Robinson, Articles and Essays, By Popular Demand: Jackie Robinson and Other Baseball Highlights, 1860s-1960s, Digital Collections

The First Time Jackie Robinson Broke Baseball's Color Barrier – Rediscovering Black History

Baseball Integration, 1947-1986 – Society for American Baseball Research

A different time: When Jackie Robinson broke baseball's color barrier 60 years ago today, surprisingly, it came with little fanfare - Deseret News

Baseball Integration, 1947-1986 – Society for American Baseball Research

Crossing the Color Barrier: Jackie Robinson and the Men Who Integrated Major League Baseball - LA84 Foundation

Baseball color line - Wikipedia

Crossing the Color Line: Jackie Robinson's Early Career, Baseball

Baseball Integration, 1947-1986 – Society for American Baseball Research

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