Pirates' alternate uniform harkens to early '70s
Uni Watch's Friday Flashback -- The Pirates go back to their
Pittsburgh Pirates - Wikipedia
Rumor] Pirates to bring back 70s throwback uniforms for 2016
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Uniforms and Logos Pittsburgh Pirates
Pirates' alternate uniform harkens to early '70s
The Pirates are wearing some sweet alternate throwback uniforms
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Pirates Made Uniform History – FOB Sports (Friends of Bob)