You will need to obtain them on your own. NOT intended for competitive play.
Minnesota Vikings style NFL Vintage Football Helmet - FRAN TARKENTON 1972-1973
Vintage Kansas City Chiefs Helmet Art - Row One Brand
NFL History: 100 objects that tell the story of football - Sports Illustrated
Raiders Capture First Super Bowl, 32-14, over Vikings
Iowa State Players in Professional Football: Part 3B (1970s) - Wide Right & Natty Lite
Minnesota Vikings Fan Helmets for sale
Vintage Minnesota Vikings Football Helmet Art - Row One Brand
Row One Brand Print
Vintage New York Giants Football Helmet Art