Leonardo Helicopter
LEONARDO DA VINCI Sketch of a flying machine which seems in some respects to anticipate the helicopter, though the technology is not clear
Picture No
12004755
Media ID
48576581
Size
5246px x 3628px
(4.6MB)
Credit
Mary Evans Picture Library
Source
reproduced in Gaston Tissandier, La navigation aerienne' page 25
Date
circa 1500
