The practical printer : a complete manual of photographic printing (1874)
Hearn, Charles W · Philadelphia : Benerman & Wilson · leaf 83
then the background is darker than what it would be if vignetted, and consequently the border can be printed lighter than the background, but when, as is very often the case in printing the prints in vignette, the background is very light, then the border is generally printed until it bronzes, so… … two to three seconds , a second more often spoiling the print. There are a number of cameo presses in the market. Fig. 32
Photography -- Printing processes · Photographs on porcelain
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
