[VOLTAIRE]. Questions sur l'Encyclopédie, par des amateurs. S.l.n.n. [Genève, Cramer], 1770-1772; 9 volumes in-8, marbled calf, triple gilt fillet, decorated smooth spines, red edges (period binding). First edition. Voltaire offers here a sort of personal encyclopaedia arranged in alphabetical order, largely taken from his earlier writings, in particular the Dictionnaire philosophique. Among the most famous articles: Athéisme, Curiosité, Cérémonies, Justice, Vampire, etc. In his introduction, Voltaire praises the Encyclopédie and warns the authors against forgeries or contributions by disreputable authors who, having opposed the project, would attempt to deviate from it. Heavy spotting to volume IV, small tear to head of volume V. Bengesco, n°1408 - Voltaire imprimé tout vif, 111.