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 the nightlife, and that he was influenced by the works of the sixteenth century German painter Lucas Cranach the Elder in Munich's famed Alte Pinakothek, known for its Old Master paintings. Duchamp recalled that he took the short walk to visit this museum daily. Duchamp scholars have long recognized in Cranach the subdued ochre and brown color range Duchamp later employed. The same year, Duchamp also attended a performance of a stage adaptation of Raymond Roussel's 1910 novel, "Impressions d'Afrique," which featured plots that turned in on themselves, word play, surrealistic sets and humanoid machines. He credited the drama with