New York: The Vanishing Rotating Triangle, 1972. Wilson, Robert. First. paperback. Despite the title, there is only 1 b/w illustration. The 21 pages of text is a description "of all the images visible during one of the rare performances of Deafman Glance by Robert Wilson in 1971". Slim 4to, tinted mylar cover, staple-bound. New York: The Vanishing Rotating Triangle, 1972. First edition. A near fine copy of this odd and quite scarce art book. near fine.