About Al Held Books by Al Held The Halifax Conference edited by Jeff Khonsary adapted by Craig Leonard other primary creator Carl Andre, Joseph Beuys, Daniel Buren, Jan Dibbets, Mario Merz, Robert Morris, Ingrid Baxter, Richard Serra, Richard Smith, Robert Smithson, Michael Snow, Lawrence Weiner, Ronald Bladen, Al Held, Robert Murray, Gene Davis & Iain Baxter