Second edition of the exhibition catalogue originally published in conjunction with a show of artists' books held at Nigel Greenwood Inc. Ltd., London, September 20 - October 14, 1972. Extensive essay by Celant. Exhibition checklist organized chronological order. Artists include Germano Celant, Dick Higgins, Bern Porter, Dieter Rot [Dieter Roth], John Cage, Ben Vautier, Eduardo Paolozzi, Daniel Spoerri, La Monte Young, Jackson Mac Low, Piero Manzoni, Edward Ruscha, George Brecht, Yoko Ono, Robert Filliou, Ray Johnson, Allan Kaprow, Alison Knowles, Ay-o, Oyvind Fahlstrom, Jerome Rothenberg, Gianfranco Baruchello, Mel Bochner, Claes Oldenburg, Terry Atkinson, Michael Baldwin, Philip Corner, Juan Hidalgo, Zaj, Bruce Nauman, Michelangelo Pistoletto, Mel Ramsden, Carl Andre, Robert Barry, Douglas Huebler, Joseph Kosuth, Sol LeWitt, Robert Morris, Lawrence Weiner, Ian Burn, Henry Flynt, Harold Hurrell, Stephen Kaltenbach, Walter Marchetti, N.E. Thing Co., Giulio Paolini, Emmett Williams, Franz Erhard Walther, Andy Warhol, Vito Acconci, Stig Brogger, Marcel Broodthaers, James Lee Byars, José Luis Castillejo, Roger Cutforth, Hanne Darboven, Jan Dibbets, Dan Graham, Martin Maloney, Emilio Prini, Allen Ruppersberg, Richard Tuttle, Bernd & Hilla Becher, Mark Boyle, Stanley Brouwn, Daniel Buren, Donald Burgy, Gerald Ferguson, Joseph Beuys, Joel Fisher, Gilbert & George, Rodney Graham, Kathe Gregory, Marilyn Landis, Russell Lewis, David Crane, Scott Kahn, Gerard Hemsworth, David Lamelas, Richard Long, Mario Merz, Dennis Oppenheim, Tom Phillips, Peter Roehr, Keith Sonnier, Bernar Venet, Art-Language, Derek Boshier, Alessandro Carlini, Karl Lang, James Collins, Giancarlo Croce, Michael Harvey, Giorgio Fabbris, Giorgio Spiller, Hamish Fulton, Sandro Greco, John Latham, Bob Law, Giuseppe Penone, Klaus Staeck, Athena Tacha, Gerard Titus-Carmel, Vincenzo Agnetti, John Baldessari, John Blake, Victor Burgin, Giuseppi Chiari, Claudio Costa, Ger van Elk, Richard Hamilton, Bruce McLean, Kevin Lole, Paul Smith, Philip Pilkington, David Rushton, John Stezaker and others.