Pirates' alternate uniform harkens to early '70s

Pirates Made Uniform History – FOB Sports (Friends of Bob)

Pirates announce roster, schedule for alternate training site

Pirates Become Latest Pro Sports Team To Drop Ugly Alternate Uniforms – OutKick

Pittsburgh Pirates Unveil New City Connect Uniform: Bleeding Black and Gold – SportsLogos.Net News

The best and worst uniform looks for every NFL team

How the Pittsburgh Pirates sparked a uniform revolution in the 1970s - ESPN

Nick Dombkowski, West Springfield native, eager to begin pro career with Pittsburgh Pirates, 'I still have a lot to prove'

Stronger Together: The Connor Joe Story, by Colorado Rockies