NY: G. Gennert, 1898. First ed. 8vo., 104 pp., ,  adverts.,  b&w plates from photographs, 40 illustrations and figures in text. Decorative cloth, which is lightly rubbed and faded. Very good. Item #26827
Issued in the Gennert Photographic Library. A clearly written manual of contemporary photographic practices and processes.
OCLC locates only four copies. Roosens and Salu fails to list this manual.