Pittsburgh Pirates to wear 1979 uniforms for Sunday games - Sports Illustrated
Throwback Uniforms: Pirates and Reds (1979)
Throwback uniform - Wikipedia
The throwback uniforms we'd love to see from American League teams in 2017
Uni Watch's Friday Flashback: Buzz, buzz go the Pirates - ABC News
Official Pittsburgh Penguins Website
Negro Leagues Throwback Uniforms in Pittsburgh Today – SportsLogos.Net News
pittsburgh pirates – SportsLogos.Net News
Pirates party like it's 1979 with funky, fantastic throwback uniforms