“In 1905 Thomas Manly (d. 1932) of London introduced the Ozobrome process,21 which was a modification of his earlier Ozotype, patented in 1898.22 The process was based on a carbon printing method proposed in 1873 by Auguste Marion (1835–1917) ...
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Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 100.