Jen sez, “Amusing scans and illustrations from a 1941 guide to sex. For some reason, most of the glands and body parts they illustrate look like Cthulhu monsters. There’s also an amazing chart of comparative clitoris sizes, with each sample sketch life-sized but looking like Popeye chins.”
So, Dr. Keller claims his images make sex better. This one shows how nerves and glands dance the maypole around the brain.
Studies in Crap Unveils Picture Stories of the Sex Life of Man and Woman
(Thanks, Jen!)