The History of The Football Helmet timeline
Digital Exhibits — Guilbeau Center for Public History
The Evolution of Football Helmets timeline
Treating Student-Athletes With Sports Concussions
Evolution of Football Helmet 1893 - 2020
Design and Virtual Testing of American Football Helmets–A Review
Antiques: Football helmets across the decades
The Evolution of Football Helmets, by Jose Diaz
History of The Football Helmet - Atavus
History of The Football Helmet - Atavus
Delaware State University Archives and Special Collections