Pittsburgh Pirates to wear 1979 uniforms for Sunday games - Sports Illustrated

Unbeaten Rays making some early history with dominant start – KXAN

The only day MLB players can wear No. 42? Jackie Robinson Day

Random thoughts about Kent Tekulve - Lone Star Ball

MLB: The Most Abominable Fashion Error in Every Team's History

You're wearing that? Ugliest MLB uniforms in history

Pirates unveil baseball's freshest look with 1979 throwback

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]