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
13726219
Media ID
45392053
Size
5553px x 3260px
(4.9MB)
Credit
Mary Evans Picture Library
Source
Unnamed photographer in L'Illustration' 12 May 1923 page 493. Image digitally colourised
Date
28-Apr-23
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