Working with the University of Virgina's Small Special Collections Library, we are pleased to offer, for the first time, online access to Douglas Gordon's famous "18th Volume" of the Encyclopédie. This extra volume, which includes some of the earliest title pages and prefatory material of the Encyclopédie project, also includes some 284 pages of corrected article proofs, comprising 46 articles submitted by Diderot which were presumably censored or altered by the publisher Le Breton before the final printing. The existence of these proofs, along with the collected legal documents pertaining to Luneau de Boisjermain's lawsuit against the Encyclopédie's publishers, has led many to believe that this volume may have belonged to Le Breton's personal collection. We have included both the transcribed text (with indications of what was censored, added, etc.) of the censored articles as well as image links to the page proofs; from the page image interface users can also browse the entire volume.