Marion and Co., author · London W. : Marion and Co., 22 and 23 Soho Square · leaf 297
285 Advertisements … of the Printing Frames, and are held in their ADGOCK'S PATENT VIGNETTER. places by two screws, but their positions may A very useful and ingenious Vignette, to be be shifted ; the oval holes being some distance sci-ewed on the front of Printing Frame. from the negative, permit the rays of light to…
Photography -- Handbooks, manuals, etc
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
