The Practical photographer; an illustrated monthly of technical photography (1904)
Boston [etc., Photo era publishing company] · leaf 64
aper over the him side of positive — tracing tlie outline either against a window or on a retouching desk, with a sol t lead pencil. Next, we turn the ti’acing over on to the paper with which we are going to back the ti’unsparency and rub the outline over with any- thing bard and smooth which will… … Fig. 40. Fig. 41. This shows the glass positive (Fig. 40) and the painted back- ground (Fig. 41). These are hinged together by means of a strip of flexible gum-paper, so that when they are in contact they are also in register, vide Fig. 23. upon this paper the effect will be dark uniform…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.