The International F-18 Air Coach
was a 1920s American
biplane transport designed and manufactured by the International Aircraft Corporation
in Cincinnati, Ohio. It had a cabin for five passengers and an open cockpit with side-by-side seating for a pilot and passenger. Only the prototype was built by the short lived company.
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 2213