Carbon printing
A 1902 London technical manual on carbon printing, a photographic process, written by photographer E. J. Wall for photographers and amateurs working with cameras and plates. The pictures are black-and-white engravings of cameras, from a studio stand-camera with bellows to folding and box cameras, with lens and shutter details drawn in clean outline. A designer could take from them the crisp hatched-line rendering of metal, leather and glass typical of Edwardian trade catalogues.
