"Twenty Years of Gunther Gerzso" is a 32 page, 8.5"x9.5" softcover published in 1970 by Phoenix Art Museum in conjunction with an exhibition. It includes an introduction by Toby Joysmith, black-and-white reproductions of some of the Mexican artist's paintings, biographical notes and a list of past exhibitions. Gerzso's autograph on the first page is printed (same in every copy), not handwritten.
The book is in very good condition, with a bit of sunning to the spine the only notable flaw.