"Société de Photographie des Couleurs Le Multicolore n°1" at https://www.collection-appareils.fr/x/html/appareil-2190-Soci%C3%A9t%C3%A9%20de%20Photographie%20des%20Couleurs_Le%20Multicolore%20n%C2%B01.html (accessed 21.8.2019)
<b>1890 - 1903 Paris [F]</b> Louis Ernest, ° 4.4.1859. Inventor and popularizer of colour photography. At his wedding in Paris [F] on 16.10.1884, recorded as an artist-painter. In the 1890s, active as an freelance colourist; he overpainted portraits and signed the resulting pictures "L. Dugardin". He founded a "Société de reproductions artistiques" in Paris, Boulevard de Rochechouart, 9 in 1896. He invented a three-colour technique using coloured screens which was demonstrated by Jules Baisieux (see that name) at a meeting of the Photo-Club de Belgique in 1898: "The three negatives thus produced enable three positives - yellow, blue and red - to be copied and printed. If the positives are transparent and they are accurately superimposed, the result will be a colour photograph" (Le Peuple, 2.11.1898). Dugardin published a brochure "Traité pratique de la photographie des couleurs" under the imprint of his "Société Internationale de la Photographie des Couleurs" which went into five editions by 1899. He took out several patents including one on 27.3.1901 for a "camera with an arrangement of independent screens for colour photography". "Le Multicolore" was manufactured in three models between 1900 and 1903. The "Société Internationale de la Photographie des Couleurs" moved to Rue Drouot, 13 by 1903.