Pro Football Journal: June 2016
Pro Football Journal: Helmet Oddity: The Off-Silver Color of the Detroit Lions Helmets in the Early 1970s
Reply to @ordinary_sausage The Lions helmet history. #detroitlions #h
Did the Team That Later Played in the Silverdome Wear Gold Domes?
An Historical Perspective on the National Football League by Thomas J. Strang - Ebook
Pro Football Journal: Facemask Oddities
Pro Football Journal: Helmet Oddity: The Off-Silver Color of the Detroit Lions Helmets in the Early 1970s
Lions – Riddell NFL Pocket Pro Helmets