Dieter Roth Pictures, (Zug, Switzerland) Catalogue 1973 1973 Dieter Roth Dieter Roth Pictures, (Zug, Switzerland) Catalogue 1973 offset on paper; perfect bound, softcover 9 ½ x 6 ¾ in. (24 x 17 cm), 76 pp. Gift of Dr. Ira G. Wool