The mid-1960s were a moment in which many artistic impulses began to gain momentum: an explosion of consumerism reverberated in the paintings of Andy Warhol and Roy Lichtenstein, and in the sculptures of Claes Oldenburg and George Segal, whose works embraced elements of popular culture; the bravura gestures of 1950s Abstract Expressionism gave way to artists such as Ellsworth Kelly, Donald Judd, a