New York, April 14, 1967 - Letter Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 14 April 1967
New York, 16 January 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to Roland Penrose, dated 16 January 1957
New York, 14 April 1967 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 14 April 1967
1939 - Institutional correspondence Correspondence between the Spanish Refugee Relief Campaign and Alfred H. Barr Jr.
1939 - Institutional correspondence Acceptance letters from Alfred H. Barr Jr., Aleksina Matisse, Georgia O'Keefe and Sidney Janis to Caspar Whitney