Siefker was an early American automobile builder based in Seymour, Indiana. In 1880, a German immigrant named William Siefker, who lived in Seymour, built a steam-powered automobile. The vehicle featured two separate engines, one for…
🔒
Subscribe for Full Access
Brands and models — Full galleries and interactive map
Exotic car catalog — Full brand details and model specs
Documentation archive — Full scans, plus PDF and ZIP downloads
