It turns out that the drawings/watercolors were the work of one Charles August Albert Dellschau (1830 - 1923).
Dellschau was a butcher for most of his life and only after his retirement in 1899 did he begin his incredible career as a self-taught artist. He began with three books entitled Recollections which purported to describe a secret organization called the Sonora Aero Club. Dellschau described his duties in the club as that of the draftsman. Within his collaged watercolors were newspaper clippings (he called them “press blooms”) of early attempts at flight overlapped with his own fantastic drawings of airships of all kind. Powered by a secret formula he cryptically referred to as “NB Gas” or “Suppa” — the “aeros” (as Dellscahu called them) were steampunk like contraptions with multiple propellers, wheels, viewing decks and secret compartments. More examples and information at Accidental Mysteries
Posted by gerardvanderleun at January 5, 2014 2:05 PM