According to another version, Duchamp did not create Fountain, but rather assisted in submitting the piece to the Society of Independent Artists for a female friend. In a letter dated 11 April 1917 Duchamp wrote to his sister Suzanne telling her about the circumstances around Fountain's submission: "Une de mes amies sous un pseudonyme masculin, Richard Mutt, avait envoyé une pissotière en porcelaine comme sculpture" ("One of my female friends, who had adopted the male pseudonym, Richard Mutt, sent me a porcelain urinal as a sculpture.")[5][6] Duchamp never identified his collaborator, but two candidates have been proposed: the Dadaist Baroness Elsa von Freytag-Loringhoven, whose scatological aesthetic echoed that of Duchamp, or Louise Norton, who contributed an essay to The Blind Man discussing Fountain. Norton, who recently had separated from her husband, was living at the time in an apartment owned by her parents at 110 West 88th Street in New York City, and this address is partially discernible (along with "Richard Mutt") on the paper entry ticket attached to the object, as seen in Stieglitz's photograph.[7]