Diversity milestone: '71 Pirates had an all-Black lineup - Los Angeles Times
Wilmer Flores part of back-to-back-to-back homers vs. Rockies
On Sept. 1, 1971, the Pirates made history with baseball's 1st all-minority starting lineup
Roberto Clemente chase for 3000 hits
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Chili Davis – Society for American Baseball Research
Pittsburgh Pirates Mark 50 Years Since Historic All-Black And -Latino Lineup
Freedom Riders 60 Years: The Protection, Preservation & People of Black History by info-pmgfirst - Issuu
Diversity milestone: '71 Pirates had an all-Black lineup - Los Angeles Times
Pirates celebrate 50th anniversary of historic all-minority lineup
Al Oliver – Society for American Baseball Research