Karl Gerstner: Synchromies: December 2, 1997 - January 3, 1998
New York, N.Y. Marlborough, 1997. Paperback. Black wraps with white lettering; 19 pp.; richly illustrated. "Karl Gerstner (2 July 1930 – 1 January 2017) was a Swiss designer, typographer, author, and artist." -- website. More