Terry

Robinson, William C.

In 1913 William C. Robinson designed and built a monoplane in the USA.

Circa 1930, F T Alderson of El Centro CA., built the Alderson A-1 aircraft powered by a 100hp Ryan-Siemens A-7 engine, and registered NX837N.

F T Alderson,
El Centro CA.
USA

Built the Alderson A-1 Circa 1930.

W C Alder & L E Derryberry of Abilene TX., in 1935, built the Alder & Derryberry A monoplane.

A three-place open cockpit monoplane powered by a 37hp Ford A engine, it was registered NX13959.

W C Alder & L E Derryberry
Abilene TX.
USA

Built the Alder & Derryberry A monoplane in 1935.

The 1913 Riggs-Wehr biplane was designed and built by Guss Riggs and Lloyd Wehr in the USA

Span: 32′

The 1913 Ratmanoff Tandem two-seater monoplane was designed and built by Ratmanoff in France