Theory of flight, 1919

To form power into a lifting body, wrap it and your own body in cloth and animal skin.

 

 

Source: “deHavilland DH-4B Kelly Field 1919.” San Diego Air and Space Museum Archives, catalog number¬†01_00093883,¬†https://www.flickr.com/photos/sdasmarchives/23543473579/in/photostream/. Photoshopped.

Estampe XIV: If I forget thee, O Jerusalem

Source: “Ceremony at Kalendia Aerodrome near Ramallah to christen a de Havilland ‘Hercules’ airliner of the Imperial Airways as the ‘City of Jerusalem,'” 1927. Matson (G. Eric and Edith) Photograph Collection, Library of Congress, http://www.loc.gov/pictures/item/mpc2005000785/PP/. Photoshopped.