The engravings reproduce in “Anonymous Engravings on Ecstasy Pills” were designed by unknown people who abandoned them. In this book of drawings, Frédéric Post offers a piece of research worthy of a modern-times archaeologist. He collected and re-created these figures, conferring thus value to an underground iconography of over 500 signs. The classification of the drawings into three groups (figures, typography, symbols) was carried out with Izet Sheshivari. This collection shows elements of a visual folklore that hints at popular figures. Made possible with the support of the Fonds d’art contemporain de la Ville de Genève (Fmac) and Pro Helvetia, Fondation suisse pour la culture. Hundred copies feature graphite embossing (430 x 230 mm.), enhanced by Frédéric Post.