Jacques Biederer was a Czech photographer who began his Parisian career in 1913, starting with G-rated portraits. His work began to become more conventionally sexual. In the 1920's and 1930's, the Biederer Studio became one of the main producers of fetish and highly erotic photography in Paris. Personally I love thinking about people in the 1920's exploring BDSM and kink and documenting it in these beautiful black and white photos. Some things never get old!
More information and images here.