“In 1932 Frederic Eugene Ives published details of his Polychrome printing system for making three-color paper prints or transparencies from two separation negatives made through a red and a green-blue filter. The process, described by its ...
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Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 281.
