Pirates' alternate uniform harkens to early '70s
The Top 5 Worst Uniforms in MLB - Sports Talk Florida - N
You're wearing that? Ugliest MLB uniforms in history
Pirates Become Latest Pro Sports Team To Drop Ugly Alternate Uniforms – OutKick
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How the Pittsburgh Pirates sparked a uniform revolution in the 1970s - ESPN
Classic Uniform Wednesday: Pittsburgh Pirates, 1957 to early 70s. : r/ClassicBaseball
50 years ago today, the Pittsburgh Pirates fielded MLB's first all Black starting lineup. : r/baseball
Pittsburgh Pirates - Wikipedia
Pittsburgh Pirates To Wear Camouflage Alternate Jerseys?
Throwback uniform - Wikipedia
Pirates announce roster, schedule for alternate training site
