אסכולת הצבע של וושינגטוןRegal Art Press, Troy NY. The Vincent Melzac Collection, Foreword by Walter Hopps, Introduction by Ellen Gross Landau, Retrospective Notes on the Washington
אמנות שדות הצבעCard Number: 62-19132 Various authors: Barbara Rose, Gerald Nordland, Walter Hopps, Hardy S. George; Breaking the Mold, Selections from the Washington Gallery