File:Cowboys 75anniv throwback.png - Wikipedia
sports unis: NFL Uniforms
File:Steelers throwback diagram.png - Wikipedia
Cincinnati Reds throwback uniforms - 1939 vs. 1936 - Red Reporter
Logos and uniforms of the Chicago Bears - Wikipedia
Throwback uniform - Wikipedia
TIL: As a Swedish Eagles fan since Cunningham was playing, I found out the yellow and blue throwback jerseys was a homage to the first Swedish settlers of Pennsylvania. Found it really
File:Hines Ward throwback 2007.jpg - Wikipedia
Cincinnati Reds throwback uniforms - 1939 vs. 1936 - Red Reporter
Seattle Seahawks - Wikipedia
Away colours - Wikipedia
What Pros Wear: San Francisco Giants Unveil Throwback Jerseys to Celebrate Juneteenth, Commemorating the End of Slavery in the USA - What Pros Wear
Arizona Cardinals - Wikipedia
File:Redskins vs Giants line of scrimmage throwbacks.jpg - Wikipedia
Cincinnati Reds throwback uniforms - 1999 vs. 1969 - Red Reporter