Platinotype printing : a simple book on the process
A technical manual on the platinotype photographic printing process, written by the photographer A. Horsley Hinton and published in London in 1899 for amateur and practising photographers. Its pictures are simple line diagrams of a print being handled by both hands, plus one rotated photographic view of a waterside town with boats and sails, so a designer could draw on the clear step-by-step hand demonstrations for instructional graphics.
