SFO Museum on Twitter: "Bicycle maker Ignaz Schwinn purchased Excelsior in 1911. A factory-backed racing team promoted Excelsior, and in 1912 at the Playa del Rey motordrome near LA, Lee Humiston became
Classic Motorcycle Consignments
Mecum to auction rights to Excelsior-Henderson motorcycle brand | ClassicCars.com Journal
THE EXCELSIOR MOTORCYCLE HISTORY STORY Bikes 1978 CARD | eBay