Maddux Air Lines was an airline based in Southern California that operated Ford Tri-motors in California, Arizona, and Mexico in the late 1920s.
Advertisement for airplane rides from Grand Central Air Terminal to see the Graf Zeppelin then visiting Los Angeles (August, 1929)
The Ford Trimotor is an American three-engined transport aircraft. Production started in 1925 by the companies of Henry Ford and ended on June 7, 1933, after 199 had been made. It was designed for the civil aviation market, but also saw service with military units.
Ford Trimotor
Ford Trimotor interior
Corrugated wing of a 1929 Ford 4-AT-E Trimotor
Externally mounted control wires of a Ford Trimotor