David Morrish & Marlene MacCallum.  Copper Plate Photogravure:  Demystifying The Process. Focal Press, 2003

William Crawford. The Keepers of the Light:  A History and Working Guide to Early Photographic Processes.  Dobbs Ferry, NY.  Morgan & Morgan, 1979

Gary P. Kolb.  Photogravure, a Process Handbook.  Carbondale and Edwardsville.  Southern Illinois University Press, 1986

Deli Sacilotto.  Photographic Printmaking Techniques.  New York.  Watson Guptill Publications, 1982

Magical Secrets Series.  Crown Point Press, www.crownpoint.com