Pfanner, H. F. (1974). Oskar Maria Graf (1894 - 1967): An exhibit at the Dimond Library University of New Hampshire, July 22 - August 22, 1974 / [this catalogue was prepared by Helmut F. Pfanner]. Dimond Library.

Pfanner, Helmut F. Oskar Maria Graf (1894 - 1967): An Exhibit at the Dimond Library University of New Hampshire, July 22 - August 22, 1974 / [this Catalogue Was Prepared by Helmut F. Pfanner]. Durham, NH: Dimond Library, 1974.

Pfanner, Helmut F. Oskar Maria Graf (1894 - 1967): An Exhibit at the Dimond Library University of New Hampshire, July 22 - August 22, 1974 / [this Catalogue Was Prepared by Helmut F. Pfanner]. Dimond Library, 1974.