Seth Siegelaub / John W. Wendler (Hg.), Carl Andre, Robert Barry, Douglas Huebler, Joseph Kosuth, Sol LeWitt, Robert Morris, Lawrence Weiner (Kat. Ausst., Galerie Seth Siegelaub, New York 1968), New York 1968, o.P.
„The ’Xerox book’ - I now would prefer to call it the “Photocopy book”, so that no one gets the mistaken impression that the project has something to do with Xerox - was perhaps one of the most interesting because it was the first where I proposed a series of “requirements” for the project, concerning the use of a standard size paper and the amount of pages the “container” within which the artist was asked to work.“
(Seth Siegelaub, Interview 1999)