Paris: Gauthier-Villars et Fils, 1889. First ed. Small 8vo., x, 146 pp., illustrated. The printed paper wrappers are chipped at the corners and lacking much of the spine; very slight occasional foxing. A good copy. Item #27007
Phototype was a name formerly given the photolithographic process invented by Poitevin and to a secret process of carbon printing invented by Joubert; it has since been applied to collotype. This volume traces the history and provides a detailed illustrated formulary and procedural manual. Roosens and Salu # 8296.