1971 Danny Murtaugh World Series Game Worn Pittsburgh Pirates Cap

The Pittsburgh Pirates made MLB history 45 years ago with an all-minority lineup

Pittsburgh Pirates Mark 50 Years Since Historic All-Black And -Latino Lineup

Clemente's teamwork helped make historic Pirates 1971 lineup a reality

segregation-desegregation — BEN SAKOGUCHI

Danny Murtaugh – mlbblogger

Reunion of Pirates' 1971 World Series champions brings back memories

Pirates Made Uniform History – FOB Sports (Friends of Bob)

While Jackie Robinson's breakthrough in 1947 opened the gates of opportunity for African Americans and other minority players, it was not until 1971 when a team first enjoyed a full and complete level of integration, with half of its twenty-five-man roster comprised of players of African American and Latino descent. That team was the Pittsburgh Pirates, managed by an old-time Irishman.

The Team that Changed Baseball: Roberto Clemente and the 1971 Pittsburgh Pirates [Book]

1971 Pirates were special in many ways, John Sacco

The 1971 Pittsburgh Pirates All-Minority Lineup Was Historic, Purposeful

Pittsburgh Pirates - Wikipedia

Clemente's October led Pirates to 1971 title

Clemente and Pittsburgh Pirates- Sports Card and Sports Memorabilia Auctions