New York and London: Edmond Byrne Hackett and Elkin Matthews, Ltd, 1925.
First Edition. Hardcover. Number 105 of 250 copies issued, signed by Newton at the end of his essay. Original blue paper-covered boards with mounted paper labels. Foxing to label on front board and edges of text block, some discoloration to rear board (possibly natural to the paper used), small hole in paper over spine, bookseller label (John Coles, La Jolla, California), on rear pastedown. Binding sound, text clean. Good to very good overall. Newton's essay is followed by a facsimile of the 1785 sale catalogue.