Volume 187 in the Droz series Histoire des Idées et Critique Lttéraire. Compiled by Spears, also bibliographer of Voltaire and d'Alembert. Cites 3967 secondary references containing critiques of Diderot's works and biographical information on him. Also lists works by and about other authors and well-known personnages that treat Diderot extensively, e.g. studies on Rousseau and Catherine the Great. Includes index and table of contents. Lists periodicals cited and their abbreviations. Majority of sources up to 1975, with a very few as late as 1979. Reproduced from typescript..