Dora Kallmus may be the greatest fashion photographer you’ve never heard of. Born in 1881 in Vienna, she focused on that city’s royals and Rothschilds before moving to Paris, where she befriended fashion’s elite: Balenciaga, Schiaparelli, Chanel, Lanvin. Not only did she photograph them and their fashions, but — under the name Madame d’Ora —...