Dodgers, Royals Jackie Robinson uniforms to aid Negro Leagues

Keller gets roughed up out of the gate, Royals fall to Dodgers 13-3 Kansas City News - Bally Sports

Remembering Negro Leagues baseball

April 11, 1947: Jackie Robinson debuts in a Dodgers uniform at Ebbets Field – Society for American Baseball Research

Jackie Robinson: Biography, Baseball Player, Activist

Jackie Robinson becomes first African American player in Major League Baseball, April 15, 1947

Jackie Robinson in 1946: Integrating the Minor Leagues – Society for American Baseball Research

How Jackie Robinson's overlooked season in the Negro Leagues shaped his historic path to Major League Baseball

Jackie Robinson (1919-1972) - Baseball Legend and Civil Rights Advocate — AP Photos

Robinson's Royal history

A league of their own, News

When Jim Crow Got Cut From Spring Training - The New York Times

Black History Month: Why Jackie Robinson could have broken pro basketball's color barrier

Jackie Robinson - Wikipedia

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

Jackie Robinson: No. 42 Was No. 1 – On the Field and Off