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 vie" ("to make a toast to life"). Sélavy emerged in 1921 in a series of photographs by Man Ray showing Duchamp dressed as a woman. Through the 1920s Man Ray and Duchamp collaborated on more photos of Sélavy. Duchamp later used the name as the byline on written material and signed several creations with it. Duchamp used the name in the title of at least one sculpture, "Why Not Sneeze Rose Selavy?" (1921). The sculpture, a type of readymade called an assemblage, consists of an oral thermometer, a couple of dozen small cubes of marble resembling sugar cubes and a