Circa 1928 Edmund T Allen, Salt Lake City UT. built a two-place open cockpit biplane, bowered by a 29hp Wright-Morehouse engine.
A home-built, undocumented other than mention that it was built in Utah, and its photo taken in Cheyenne.
Edmund T Allen,
Salt Lake City UT.
USA
Aircraft builder circa 1924-28. Owner Allen is shown as with Boeing Air Transport, Cheyenne, in 1932 register, and went on to become Boeing’s test pilot, Eddie Allen.
In 1913 Alfred Rosentals designed and built a monoplane in Latvia (Russian Empire)
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
All Aero 