I’m not 100% certain that this artwork is by Peter Fendi, but it sure looks like it to me:

This photograph embodies the best of vintage erotica, in that it’s both very old and very raunchy. Sixty-nine at its kinky ancient best:

However, I still think it sounds more poetic in French: soixante neuf, baby!

Picture is from Pussy Amour, where you’ll find a much larger version.

Lesbian nuns licking each other on an erotic bookplate that says: “Ex Libris S. Golifman”, as found on Erosblog: