00850cam a22002291 4500 ca 09005901 DLC 20260227111051.0 790608s1857 xx 000 0 eng ca 09005901 (OCoLC)5047118 DLC DeU DLC TR390 .H92 Humphrey, S. D. (Samuel Dwight), 1823-1883. A practical manual of the collodion process, giving in detail a method for producing positive and negative pictures on glass and paper. Ambrotypes. Printing process ... By S. D. Humphrey. 3d ed., rev. and greatly enl. New York, Humphrey's journal print, 1857. 2 p. l., [xi]-xii, [13]-215 p. illus. 19 cm. Publisher's advertisement: 4 p. (at front) Photography. Ambrotype. 14111 14111