Contains 23 plates, including "1 three color half-tone from nature, 1 three color halftone from an autochrome, 1 Zander Process Print, and 1 chromolithograph by the Offset method. This book is an important history of color printing and Gamble's chapter on photomechanical process is invaluable. Unfortunately, this copy does not have all of its plates."--Hanson collection catalog, p. 140