Mayim Bialik - Jackie Robinson was the first black player
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Racial Parity in the Hall of Fame – Society for American Baseball Research
Karl Lindholm: Jackie, then Larry: Pumpsie was first. Who was second? - Addison Independent
A new documentary explains how the Negro League revolutionized baseball : NPR
Happy Jackie Robinson Day! : r/baseball
Before Jackie Robinson, Moses Fleetwood Walker broke baseball's color barrier - Sports Illustrated
Five Misconceptions About Jackie Robinson and Race In Baseball
Baseball - African American, Integration, MLB
Who was the first black major league baseball player, Jackie Robinson or Moses 'Fleetwood' Walker? - Quora