Exhibition catalogue published in conjunction with show held at the Kunsthalle Basel, April 19 - May 26, 1958. Traveled to the Galleria Civica d'Arte Moderna, Milan, June 1 - 29, 1958; the Museo Nacional de Arte Contemporáno, Madrid, July 16 - August 11, 1958; the Hochschule für Bildende Künste, Berlin, September 1 - October 1, 1958; the Stedelijk Museum, Amsterdam, October 17 - November 24, 1958; the Palais des Beaux-Arts, Brussels, December 6, 1958 - January 4, 1959; the Musée National d'Art Moderne, Paris, January 16 - February 15, 1959; and the Tate Gallery, London, February 24 - March 23, 1959. Artists included are William Baziotes, James Brooks, Sam Francis, Arshile Gorky, Adolph Gottlieb, Philip Guston, Grace Hartigan, Franz Kline, Willem de Kooning, Robert Motherwell, Barnett Newman, Jackson Pollock, Mark Rothko, Theodoros Stamos, Clyfford Still, Bradley Walker Tomlin, and Jack Tworkov. Includes artists' biographies and exhibition histories, catalogue of the exhibition, and a compilation of excerpts of critical reviews.