From the mid-1960s to the mid-70s, installations of projected light, still images, and film introduced a new, interactive vocabulary to gallery art exhibits. Since that time, the projected image has become a prominent feature of contemporary art-making, though the ephemeral nature of the original artworks means many key installations have not been widely seen. This book accompanies the Whitney Museum of American Art's exhibition of nineteen landmark film, video, and slide installations of the 1960s and 70s, many of which have been re-created for the first time, from such artists as Simone Forti, Dan Graham, Joan Jonas, Mary Lucier, Robert Morris, Bruce Nauman, Michael Snow, and Andy Warhol. Together they reveal the ways in which the traditional definitions of cinema, sculpture, and optical perception were overturned in that time, as artists created hybrid environments that incorporated video, film, slides, performance, drawing, holography, and the participation of the viewer to explore new ideas of physical and psychological space. The book is illustrated with 40 color and 140 black and white illustrations.