Helmet worn by Andy Granatelli during the Indianapolis 500, 1948
Indianapolis - HELMET HISTORY
Indianapolis - HELMET HISTORY
Indianapolis - HELMET HISTORY
History Of The Colts Helmet
Top 10 Indiana Football Helmets Ranked
Indianapolis Colts Authentic Speed 1995 - 2003, Throwback Helmets, NFL, Collectibles, Open Catalogue
The history behind McLaughlin's Indy 500 helmet design