Mexico, 21 December 1939 - Personal correspondence Juan Larrea's letter to Pablo Picasso, dated 21 December 1939
Flushing, New York, 23 May 1939 - Institutional correspondence Simon Guggenheim's and Dana C. Backus's form letter to ask for donations
Cambridge, Massachusetts, 20 November 1939 - Personal correspondence Josep Lluís Sert's letter to Pablo Picasso, dated 20 November 1939
New York, 15 December 1939 - Institutional correspondence Alfred H. Barr Jr.'s telegram to Pablo Picasso, dated 15 December 1939
23 November 1939 - Personal correspondence Francisco de Troya's letter to Pablo Picasso, dated 23 November 1939
New York, 6 July 1939 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 6 July 1939
Chicago, 12 October 1939 - Institutional correspondence Alice Roullier's letter to Evelyn Ahrend, dated 12 October 1939
1939 - Institutional correspondence Correspondence between the Spanish Refugee Relief Campaign and Alfred H. Barr Jr.
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
