The front cover of the notebook.
1793 (approx.)
Sir George Cayley's Notebook - 'Motive Power' (1793)
In his lifetime, Sir George Cayley (1773-1857) published just a few papers on the subject of aeronautics and many of his ideas are explored in five illustrated manuscript notebooks which were presented on permanent loan to the Royal Aeronautical Society in 1946 by Cayley's grandson Sir Kenelm Cayley. The…