How to make pictures : easy lessons for the amateur photographer (1887)
Price, Henry Clay · New York : Scovill Manufacturing Co. · leaf 55
47 TRANSPARENCIES, MAGIC LANTERN SLIDES, ETC. Take of Solution N o. 1, seven ounces ; and of No. 2 Solu¬ tion, one ounce. Mix them, and develop until the detail in the highly lighted portion shows quite plainly. The result should be a fine positive picture or transparency, which is fixed, washed… … This illustration is presented with the triple purpose of showing a pic¬ ture made upon a Carbutt A Plate ; also, the glass with etched border, and the drawing-room transparency frame, which give a finish to the picture.
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.