Rotterdam / Köln: Museum Boymans-Van Beuningen / Kunstverein Köln, 1991. First Edition. Quarto. Edition of 2500. Artists' book published on the occasion of Christopher Wool's exhibitions in Rotterdam and Köln, Innovative exhibition catalogue comprised of Wool's word and pattern paintings photographed, then photocopied to various effects; enlarged, overexposed, neon-colored, out-of -focus. Second volume is a supplement, with introduction by Wim Crouwel, text by Glenn O'Brien, checklist, exhibition history, and a list of Wool's artists' books and print projects through 1989. One of Wool's best books. Near fine with light soiling to the page edges, in a near fine jacket with a faint stain to the front panel and very light edge-wear; the supplement text volume has light soiling and toning, else near fine in printed wrappers.