According to Messy Nessy Chic, in 1909 a wealthy French banker named Albert Kahn decided to create a photographic archive of the world using the new color photography process which had just appeared. He
hired four photographers and asked them to take their cameras in various locations around the world. One of the cities they documented was Paris.
As of 1914, Photographers of Albert Kahn (Léon Gimpel, Stephane Passet, Georges Auguste Chevalier and Leon) have begun to document life in Paris using the photographic restitution process color avant-garde, whose technique was to sprinkle a glass plate with millions of microscopic particles (potato starch grains) dyed red (orange), green and blue (purple), set by the resin.
In addition to the large number of photos of Paris, about 72,000 autochrome were created around the world through the ambitious project of Albert Kahn. The autochrome lost its esteem photographers only a few decades after its introduction when Kodak and Agfa introduced their processes Kodachrome and Agfacolor-Neu respectively in 1935 and 1932. These photos were taken in 1914 Paris.
Here is a beautiful color photos gallery that these photographers have shot over a century back: