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First black player in major leagues? Hint: It wasn't Jackie Robinson - Los Angeles Times
In a state wrought with racial tension, Jackie Robinson suited up for his first spring training game
CAAM | #blackhistory: On April 10, 1947, Jackie Robinson becomes first black player signed to a Major League Baseball contract
This day in sports: Jackie Robinson became first African-American major league baseball player in 1947 | WDVM25 & DCW50 | Washington, DC
First black All-Star Game players in 1949
Deciphering baseball's shocking lack of black players | WBEZ Chicago
Jackie Robinson's First Year in Major League Baseball - The Civil Rights Act of 1964: A Long Struggle for Freedom | Exhibitions - Library of Congress
Jackie Robinson wasn't the first African American Major League player - The Washington Post
NYT Obituaries on Twitter: "Jackie Robinson, first black baseball player in the major leagues, died on this day in 1972 https://t.co/nCrvzW0gw7 https://t.co/UyOdCFwk0r" / Twitter
Jackie Robinson and the Montreal Royals (1946) | The Canadian Encyclopedia
Baseball Demographics, 1947-2016 – Society for American Baseball Research