Softcover. Norwalk, CT, Burndy Library, 1st, 1971, Book: Very Good, Dust Jacket: None, 24 pages. Includes supplement reproducing 3 original drawings from the 1791 of de Viribus Elecricitatis. 3 folding plates. Illustrated throughout with reproductions of sketches and written documents in b&w. Expanded version of a biography prepared for the forthcoming edition of Encyclopedia Brittanica.