"Shortly after its opening, the Museum of Contemporary Art planned an exhibition to record the trend, incipient then and pervasive today, toward conceptualization of art. This exhibition, scheduled for the spring of 1968 and abandoned because of technical difficulties, consisted of works in different media, conceived by artists in this country and Europe and executed in Chicago on their behalf. The telephone was designated the most fitting means of communication in relaying instructions to those entrusted with fabrication of the artists' projects or enactment of their ideas. To heighten the challenge of a wholly verbal exchange, drawings, blueprints or written descriptions were avoided." - Jan van der Marck from record jacket.

Artists on LP include: Siah Armajani, Richard Artschwager, John Baldessari, Iain Baxter, Mel Bochner, Geoge Brecht, Jack Burnham, James Lee Byars, Robert H. Cumming, Francoise Dallegret, Jan Dibbets, John Giorno, Robert Grosvenor, Hans Haacke, Richard Hamilton, Dick Higgins, Davi Det Hompson, Robert Huot, Alani Jacquet, Ed Kienholz, Joseph Kosuth, Les Levine, Sol LeWitt, Robert Morris, Bruce Nauman, Claes Oldenburg, Dennis Oppenheim, Richard Serra, Robert Smithson, Guenther Uecker, Stan Van Der Beek, Bernar Venet, Frank Lincoln Viner, Wolf Vostell, William Wegman, William T. Wiley.

The 2008 screenprinted gatefold cover, produced by Specific Object, is an exacting reproduction of original 1969 offset printed cover, which incorporates an installation image on the back cover, and extensive introductory text and additional texts on each participating artist.