Adams, John D. (John Duncan), 1879- · Chicago : Popular Mechanics Co · leaf 92
METAL WORK AND ETCHING 86 stick will make a good brush. Upon the cleansed metal put a lacquer to prevent tarnishing. Metal clips Fig. 47 — Working Out the Design may be soldered to the back to hold the picture in place and also a metal strip to hold the frame upright. These should be placed before…
Metal-work · Etching
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.