Mariners to Wear Seattle Steelheads Uniforms May 16 vs. Boston

2022 Seattle Mariners Digital Postseason Media Guide, PDF, Pitcher

fanatics.frgimages.com/seattle-mariners/mens-nike

The 2022 Uni Watch MLB Season Preview - by Paul Lukas

Mariners, Red Sox to Wear Negro League Uniforms – SportsLogos.Net News

The 2021 Uni Watch MLB Season Preview - InsideHook

FanPost Friday: Talk uniform to me - Lookout Landing

LEADING OFF: Juneteenth around MLB and Father's Day

Seattle Mariners' Dustin Ackley batting against the Boston Red Sox in a baseball game on Saturday, May 16, 2015, in Seattle. Both teams are wearing uniforms of Negro League teams of 1946

Mariners celebrate Juneteenth by honoring those pioneers who blazed a trail 75 years ago

The Mariners are these wearing throwback uniforms vs the Rays today to honor the Seattle Steelheads, a former Negro League team : r/baseball

History:  The West Coast Baseball Association was an attempt at a western Negro League competitor, but it only lasted one season. The Seattle entry in the league was actually Abe Saperstein's Harlem Globetrotter baseball team under a new name, that of a local variety of salmon.

Ebbets Field Flannels Seattle Steelheads 1946 Home Jersey

Mariners Game Notes: M's Turn Back the Clock on Saturday Night

Mariners mailbag: Trade chatter, Carlos Santana's role, Jarred Kelenic's development - The Athletic

Mariners win on walk off in 10th inning vs. Rays