In 1950s California, and especially in Los Angeles, there existed few venues for contemporary art. To a whole generation of California artists, this presented a freedom, since the absence of a context for their work meant that they could coin their own, and in uncommonly interesting ways. The careers of Ed Ruscha, Wallace Berman and Ed Kienholz all begin with this absence: Ruscha turned to books as a means of dissemination, Berman pioneered mail art...