Helicopter - French engineer Oehmichen at Valentignay, Doubs
Throughout the world, inventors seek to build a viable helicopter : here French engineer Oehmichen flies his graceful project at Valentignay, Doubs
Picture No
12006852
Media ID
46507996
Size
5553px x 3260px
(5.3MB)
Credit
Mary Evans Picture Library
Source
Unnamed photographer in L'Illustration' 12 May 1923 page 493
Date
28-Apr-23
