He was known for his readymades such as "L.H.O.O.Q.", a copy of the "Mona Lisa" with a penciled-in mustache & beard
[DOC] [TLE] Unpacking Duchamp - UC Press E-Books Collection, 1982-2004 [PAR] Pierre Cabanne interprets Duchamp's reproduction of his own works as a sign of 
his desire to ...