Very definately NSFW, but in a good way - pages from a seventies pornographic colouring book.
This came up on boing boing, and I just had to investigate. You know, for research. The pages are somehow better for not being coloured in - whoever did them - by hand, remember, there was no Adobe IllustratorTM in those days - had an amazing eye for a line.
They're like Alphonse Mucha on hardcore and acid.
And would make *fabulous* stained glass windows.