Pirates' alternate uniform harkens to early '70s
Pirates Made Uniform History – FOB Sports (Friends of Bob)
Pirates Become Latest Pro Sports Team To Drop Ugly Alternate Uniforms – OutKick
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Pirates Made Uniform History – FOB Sports (Friends of Bob)
The Pirates are wearing some sweet alternate throwback uniforms this year - NBC Sports
Best MLB Uniforms: The 18 Greatest That Don't Exist Anymore
