Paris: Gauthier-vVillars et Fils, 1894. First edition. 12mo., vi, 72 pp., 11 figures in text. Publisher's wrappers, which show a moderate dampstainon the rear and final blank endpaper. Tiny ink notation on the front wrapper, pencil notaions on page margins. Very good. Item #53637
First separate work on photographic perspective. Roosens and Salu No. 7882.