Football Uniform History - Hail State Unis
Virginia Tech Football Helmet History
Dallas Cowboys - Wikipedia
The Gridiron Uniform Database
The Gridiron Uniform Database
Cleveland Browns' Helmet History - Dawgs By Nature
ECU Reveals New Uniforms For Memphis Game - East Carolina
Seattle Seahawks' 'Kingdome-era' throwback uniforms return - ESPN
Packers introduce history-inspired alternate uniform
Browns unveil white alternate throwback helmets
Heritage Uniforms and Jerseys and Stadiums - NFL, MLB, NHL, NBA
Virginia Tech Football Helmet History
The Gridiron Uniform Database: The Throwback Helmet Evolution
The history of football uniforms - NPP