Encyclopédie, ou Dictionnaire raisonné des sciences, des arts et des métiers

No book-club issues apply. The specific documented trap: in 1770 Charles Joseph Panckoucke produced a reprint of the first three volumes which he dated 1751; these were impounded and later absorbed into a composite edition (also known as the 'Riverside' edition). A volume one dated 1751 is therefore not by itself proof of a first-edition set. Panckoucke obtained the rights to re-issue the work in 1775, and there were nine editions of the Encyclopédie in all. Because the set ran over two decades and was reprinted from early on to serve a subscriber list that grew from 1,000 by volume 3 to 4,000 by volume 4, made-up sets mixing editions are the norm rather than the exception — every volume must be collated individually against its expected imprint.