Readymades of Marcel Duchamp to turn up any identical matches to photographs of the originals. However, there are accounts of Walter Arensberg and Joseph Stella being with Duchamp when he purchased the original "Fountain" at J. L. Mott Iron Works. Such investigations are hampered by the fact that few of the original "readymades" survive, having been lost or destroyed. Those that still exist are predominantly reproductions authorized or designed by Duchamp in the final two decades of his life. Shearer also asserts that the artwork "L.H.O.O.Q." which is recorded to be a poster-copy of the "Mona Lisa" with a moustache drawn on it, is
Marcel Duchamp scandalized Americans at the Armory Show, and helped secure the sale of all four of his paintings in the exhibition. Thus, being able to finance the trip, Duchamp decided to emigrate to the United States in 1915. To his surprise, he found he was a celebrity when he arrived in New York in 1915, where he quickly befriended art patron Katherine Dreier and artist Man Ray. Duchamp's circle included art patrons Louise and Walter Conrad Arensberg, actress and artist Beatrice Wood and Francis Picabia, as well as other avant-garde figures. Though he spoke little English, in the course of supporting