The deck of cards I used is a reprint from Faber & Faber. Interestingly enough, some of the hidden images that were used for this deck are modelled on illustrations of popular erotic literature. Even given the fact that there are only so many ways a man and a woman can have sex and thus certain positions appear again and again and yet again in erotica, I've found two very distinct scenes incoporated in that deck of cards: the Five of Clubs shows two couples making love in a gondola in Venice -- exactly the same (down to the red cap of one of the men) scene can be found in a series of illustrations by an anonymous artist, where it is called Une nuit à Venise. The Five of Hearts -- a turbaned man looking on as two women are enjoying themselves -- is an illustration from Thousand and One Nights; a similar (but not the same) scene was done by Achille Devéria for the 1850-edition of Les mille et une nuits.

The Eight of Hearts is another rather interesting card: the hidden image shows a man and a woman together in bed; she is sitting astride him -- and is blowing up a condom!