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Wikipedia has a nice page about it : "Rue de l'Avenir" (Street of the future)

Scroll down to the photos and be momentarily surprised at the fact that some are in colour.

Hand-colored, "photochromes". One of them is in Commons category "1900 black and white photographs". Check out "autochromes", though:

Leonid Andreev's moody selfie poses amuse me. (Circa 1910.)