"Dellschau (1830-1923) was an enigmatic self-taught artist -- a Texas butcher who spent his retirement cloistered in an attic painting large-scale books of flying machines. Forgotten for nearly fifty years after his death, his books were unearthed in the late 1960s. A visually compelling body of work created by America's earliest known visionary," - quote from here.
Here are some really bizarre sculptures made after the fantastic aircraft designs of Dellschau by Terry Nowell.
Small biography with pics
Article from Raw Vision
More info on the life of Charles Dellschau