The practical printer : a complete manual of photographic printing (1874)
Hearn, Charles W · Philadelphia : Benerman & Wilson · leaf 62
ed to the studying of the different effects of light and shade throughout all nature. In a photograph, where everything is either black or white, with proper gradations, these shadows and lines are more observable than they are in life, on account of their printing black. These shadows, &c., to be… … in a great measure, in many cases (according to the age of the per¬ son, &c.), only leaving a trace of each line there, and they will then be as observable in the photograph as they are in life The shadows under the eyebrows should then be very much re¬ moved, unless there has been considerable…
Photography -- Printing processes · Photographs on porcelain
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
