Jackie Robinson is not the first Black Major League Baseball player
Jackie Robinson - California Museum
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
Black baseball players struggled long after Jackie Robinson broke the color barrier
MLB's minor league plan is slap in the face to Jackie Robinson
Transylvania's A. B. “Happy” Chandler was commissioner of Major League Baseball when Jackie Robinson broke the color barrier - Transylvania University - 1780
Jackie Robinson's MLB Debut Bothered the Negro Leagues' Best Players
The Real Story of Baseball's Integration That You Won't See in 42 - The Atlantic
The legacy of 42 – Workers World
Jackie Robinson broke baseball's color barrier but these Black players still faced racism
Breaking Baseball's Color Barrier - Georgia Historical Society