Focusing on two of the most fervent and experimental decades in recent art history, Art Expanded, 1958–1978 delves into a transformational period when artists around the world collectively began to challenge, critique, and upend traditional media and disciplines. This second volume of the Living Collections Catalogue offers new critical histories of works in the Walker’s collections and provides deep access to its unique archival materials. New writings on Joseph Beuys, Lynda Benglis, Tony Conrad, Merce Cunningham, Fluxus, Barry La Va, Niki de Saint Phalle, Robert Rauschenberg, Jack Smith, and others testify to the era’s innovations and its unruly spirit of artistic reinvention.