State of Mind, the lavishly illustrated companion book to the exhibition of the same name, investigates CaliforniaÕs vital contributions to Conceptual artÑin particular, work that emerged in the late 1960s among scattered groups of young artists. The essays reveal connections between the northern and southern California Conceptual art scenes and argue that ConceptualismÕs experimental practices and an array of then-new mediaÑperformance, site-specific installations, film and video, mail art, and artistsÕ publicationsÑcontinue to exert an enormous influence on the artists working today.