TSN Archives: Jackie Robinson makes his debut with the Dodgers (April 23, 1947, issue)
How MLB continues its focus on growing the sport among African Americans
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Glanville: On Jackie Robinson Day, the work continues - The Athletic
World Series highlights the dwindling of Black players in America's pastime
Remembering Jackie Baseball Hall of Fame
42 in '47: The Baseball Cards of Jackie Robinson's Dodger Debut – SABR's Baseball Cards Research Committee
Major League Baseball's waning African-American talent pool - Sports Illustrated
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Jackie Robinson's Signing Caused a Financial Dispute - The New York Times
From Mays to Aaron to Banks, the first 42 Black players to follow Jackie Robinson's lead