Platinotype : its preparation and manipulation (1895)
Abney, William de Wiveleslie, Sir, 1843-1920, Clark, Lyonel · London : Sampson Low, Marston & Co. · leaf 72
a little pellet of cotton-wool may be taken between the fingers and used for small sizes. A variety of the Blanchard brush, as proposed by Mr. Lyonel Clark, is very useful where large sized pieces of paper are to be coated. A sheet of fairly thick celluloid, such as is used for film photography, is… … ends of the swansdown folded over the celluloid, and then clipped between two pieces of wood or glass that are sprung together with a broad indiarubber band, and which pieces serve as a handle. The celluloid gives the necessary stiff- ness without rigidity, whilst the packed swansdown makes a…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.