Popular Mechanics, heinäkuu 1944
If you like sepia-toned prints, you can make them inexpensively by dipping them in a solution of coffee. The strength of the coffee will determine the tint, and the proper shade can be found by experiment. after the prints are tinted, was them in running water for a few minutes and dry in the usual manner.
- William Swallow, Brooklyn, N. Y.
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