1989 Topps Football 273 Howie Long NM/M (Near Mint/Mint) : Collectibles & Fine Art
2016 Cal Poly Football Media Guide by Cal Poly Athletics - Issuu
Howie Long Trading Cards: Values, Tracking & Hot Deals
Auction Details Backes Auctioneers
Howie Long Trading Cards: Values, Tracking & Hot Deals
Howie Long Football Trading Card Database
Cardboard appreciation: 1992 Upper Deck Deion Sanders SP
231 Los Angeles Raiders Howie Long Stock Photos, High-Res Pictures, and Images - Getty Images
St. Louis Rams album, Cardboard History Gallery
Howie Long Trading Cards: Values, Tracking & Hot Deals
Dallas Cowboys album, Cardboard History Gallery