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

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.

Florida school district pulls children's book on Roberto Clemente

The day the Pirates fielded the first all-Black and Latino lineup

The Hall of Famer Next Door - WSJ