Throwback uniform - Wikipedia
Uniforms and Logos Pittsburgh Pirates
Kyle Schwarber homers, Bryce Harper ejected but Phillies fall to Pirates 3-2, Sports Ap
How the Pittsburgh Pirates sparked a uniform revolution in the 1970s - ESPN
The Top 5 Worst Uniforms in MLB - Sports Talk Florida - N
The story behind Pitt's 'steel city' alternate uniforms
Logos and uniforms of the New York Mets, New York Mets Wiki
Best MLB Uniforms: The 18 Greatest That Don't Exist Anymore
Pirates Made Uniform History – FOB Sports (Friends of Bob)
Pittsburgh Pirates Alternate Uniform Pittsburgh pirates, Pirates, Pittsburgh
Pirates' alternate uniform harkens to early '70s