Amstutz, N., Handbook of Photo-engraving (1913)
Pdf Wilkinson, W. T., Photo-mechanical processas
Amstutz’ Hand-Book of Photoengraving. Being an enlargement and revision of Jenkins’ Manual of Photoengraving. By N.S. Amstutz … With supplementary chapters on the theory and practice of half-tone colorwork, by Frederick E. Ives and Stephen H. Horgan. Third edition. [With illustrations.].