Mariners to Wear Seattle Steelheads Uniforms May 16 vs. Boston, by Mariners PR

Wayback Machine: A legacy of black baseball - Sportspress Northwest

Steelheads Tridents and Trading Cards

Mariners' City Connect uniforms pay tribute to Pacific Northwest

The 2021 Uni Watch MLB Season Preview - InsideHook

Julio Rodriguez Game Used Seattle Steelheads Uniform - 6/17/23

The Uni Watch 2023 MLB Season Preview - by Paul Lukas

Paul Lukas on X: Mariners planning to wear 1946 Seattle Steelheads throwbacks for Salute to the Negro Leagues on June 20 vs. Royals, who will wear KC Monarchs throwbacks. / X

Mariners debut latest City Connect uniforms

Here's a look at the Mariners' new City Connect jerseys and story behind them, Sports

Mariners pay homage to club's history with new City Connect uniforms