Dennis Hopper began working as a painter, a photographer, a poet and as well as a collector of art in the 1960s as well, particularly Pop Art. Over his lifetime he amassed a formidable array of 20th- and 21st-century art. Numerous works from his early cohorts, such as Ed Ruscha, Edward Kienholz, Roy Lichtenstein (Sinking Sun, 1964), and Andy Warhol (Double Mona Lisa, 1963); and pieces by contemporary artists such as Damien Hirst and Robin Rhode. He was involved in L.A.’s Virginia Dwan and Ferus galleries of the 1960s, and he was a longtime friend and supporter to New York dealer Tony Shafrazi. One of the first art works Hopper owned was an early print of Warhol’s Campbell’s Soup Cans bought for $75.