Negro League Seattle Steelheads a brief but essential part of the city's rich baseball history
The Negro Leagues are Major Leagues - AZ Snake Pit
The story of baseball's forgotten Willie Mays, a pro player in SF — but never for the Giants
Clinton Yates — Andscape
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MLB City Connect uniforms, ranked: Where Orioles' new Nike look fits between worst (Giants) and best (Marlins)
Steelheads Alley Steelheads Alley in Seattle, WA
NLB - The Ultimate Negro Leagues Shop – tagged Seattle Steelheads – Royal Retros
Mariners' City Connect uniforms capture essence of future nostalgia - The Athletic
MLB All-Star Game — Andscape
Mariners, Red Sox to Wear Negro League Uniforms – SportsLogos.Net News
Wayback Machine: Seattle Steelheads' short life - Sportspress Northwest
Negro League Baseball: Ed Harris and the PCL
Clinton Yates — Andscape
Wayback Machine: A legacy of black baseball - Sportspress Northwest
The Rich History of Cuban Baseball – Ebbets Field Flannels