Clinton Yates — Andscape
NLB - The Ultimate Negro Leagues Shop – tagged Seattle Steelheads – Royal Retros
Clinton Yates — Andscape
Negro League Seattle Steelheads a brief but essential part of the city's rich baseball history
Mystery Caps of Mexico – Ebbets Field Flannels
The story of baseball's forgotten Willie Mays, a pro player in SF — but never for the Giants
Wayback Machine: Seattle Steelheads' short life - Sportspress Northwest
Steelheads Alley Steelheads Alley in Seattle, WA
African American professional baseball debuts in Seattle on June 1, 1946.
NLB - The Ultimate Negro Leagues Shop – tagged Seattle Steelheads – Royal Retros
Salute to the Negro Leagues: A Juneteenth Celebration
Baseball Reference Adds Negro League Stats - The New York Times
Seattle Steelheads (1946) •
Juneteenth celebrations: Seattle Mariners honor Negro Leagues
Wayback Machine: Seattle Steelheads' short life - Sportspress Northwest