Yoko Ono Lennon attends a press conference for the new film "The U.S. vs. John Lennon" at the Regency Hotel in New York on September 6, 2006. (UPI Photo/Laura Cavanaugh) (Newscom TagID: upiphotos720349) [Photo via Newscom]
Yoko Ono- Life, paintings, contribution, death- Easy explanation | artandcrafter.com Conceptual art
Portrait of American artist Sol LeWitt (1928 - 2007), New York, New York, August 1969. (Photo by Jack Robinson/Hulton Archive/Getty Images)
Sol LeWitt- Short notes | Know everything in seconds-artandcrafter.com Conceptual art
Joseph Beuys nach der Räumung der Staatlichen Kunstakademie Düsseldorf, 1972
