New York, 15 December 1939 - Institutional correspondence Alfred H. Barr Jr.'s telegram to Pablo Picasso, dated 15 December 1939
New York, 4 November 1944 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 4 November 1944
New York, 25 September 1944 - Institutional correspondence Alfred H. Barr Jr.'s postcard to Pablo Picasso
New York, 31 October 1944 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso
New York, 15 January 1945 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 15 January 1945
New York, 2 October 1952 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 2 October 1952
Paris, 6 September 1939 - Institutional correspondence Christian Zervos's letter to Alfred H. Barr Jr., dated 6 September 1939
Paris, 27 December 1939 - Institutional correspondence Christian Zervos's letter to Alfred H. Barr Jr., dated 27 December 1939
Paris, 26 October 1939 - Institutional correspondence Christian Zervos's letter to Alfred H. Barr Jr., dated 26 October 1939