In honor of Halloween, I present spooooooooooky x-ray images made by Colorado College professor Florian Cajori ca. 1896. These are probably the first x-ray images west of the Mississippi.

What you’re seeing are a spooooooooky hand, a spoooooooky rat, a spooooooky bird wing, a spooooky foot in shoe, and a spoooooky pair of scissors. The hand and the foot belonged to CC professor Frank Loud. Colorado Springs photographer Horace S. Poley developed and printed the photographs and labeled them. He did not use any form of the word “spooky.”

For more information, see: J. Juan Reid, “Florian Cajori: First X-ray Photographs in the West,” Colorado College Bulletin, February 1982, pp.12-13.