Original 1930's Indy 500 Autographed Photo Otto Wolfer to Babe Stapp Very Rare | #461038180
Vintage 1992 Otto Indy 500 Champ Al Unser Jr Red Adjustable Rope Hat | eBay
Otto Sitterly Supermodified to Join Hall of Champions at IMIS Show – Oswego County Today
Certainly the worst, if not the unluckiest, Formula 1 driver was Otto Stuppacher. He managed to gain entry into the last four r… | Indy cars, Racing team, Formula 1