New York, 17 November 1939 - Institutional correspondence Herman F. Reissig's letter to Marcelene Peterson, dated 17 November 1939
New York, 9 December - Institutional correspondence Evelyn Ahrend's letter to the San Francisco Museum of Art
2 May 1939 - Internal institutional documents A draft text for the invitation to the exhibition Picasso's Guernica at the Valentine Gallery, New York
1939 - Institutional correspondence Acceptance letters from Alfred H. Barr Jr., Aleksina Matisse, Georgia O'Keefe and Sidney Janis to Caspar Whitney
23 August 1939 - Internal museum documents Certificate of delivery for Guernica and other materials sent from the Spanish Refugee Relief Campaign to the San Francisco Museum of Art
August 1939 - Internal museum documents A report of profits and costs for the Guernica exhibition at the Stendahl Art Galleries
New York, 1939 - Photograph Juan Negrín at the opening of the exhibition Picasso’s Guernica, at the Valentine Gallery