Cubs, White Sox honor 75th anniversary of Jackie Robinson's debut
Jackie Robinson 75th anniversary symposium
Majors celebrate 75th anniversary of Jackie Robinson's debut
After Jackie Robinson, MLB integration was halting - The Washington Post
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Blue Jays to honour 75th anniversary of Robinson's MLB debut — Canadian Baseball Network
Majors celebrate 75th anniversary of Jackie Robinson's debut
Beyond Sport
Robinson's 42 In Dodger Blue For All Uniforms On April 15