L.H.O.O.Q. a late interview (Schwarz 203), Duchamp gives a loose translation of "L.H.O.O.Q." as "there is fire down below". Francis Picabia, in an attempt to publish "L.H.O.O.Q." in his magazine 391 could not wait for the work to be sent from New York City, so with the permission of Duchamp, drew the moustache on Mona Lisa himself (forgetting the goatee). Picabia wrote underneath "Tableau Dada par Marcel Duchamp". Duchamp noticed the missing goatee. Two decades later, Duchamp corrected the omission on Picabia's replica, found by Jean Arp at a bookstore. Duchamp drew the goatee in black ink with a fountain pen,
Marcel Duchamp created the Société Anonyme in 1920, along with Katherine Dreier and Man Ray. This was the beginning of his lifelong involvement in art dealing and collecting. The group collected modern art works, and arranged modern art exhibitions and lectures throughout the 1930s. By this time Walter Pach, one of the coordinators of the 1913 Armory Show, sought Duchamp's advice on modern art. Beginning with Société Anonyme, Dreier also depended on Duchamp's counsel in gathering her collection, as did Arensberg. Later Peggy Guggenheim, Museum of Modern Art directors Alfred Barr and James Johnson Sweeney consulted with Duchamp on their modern art