New York, 15 June 1953 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 15 June 1953
New York, 15 June 1953 - Institutional correspondence Alfred H. Barr Jr.'s letter to Maurice Jardot, dated 15 June 1953
New York, 15 June 1953 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 15 June 1953
New York, 15 June 1953 - Institutional correspondence Alfred H. Barr Jr.'s letter to Paulo E. de Berrêdo Carneiro
New York, 18 April 1958 - Institutional correspondence A telegram from Alfred H. Barr Jr. to Pablo Picasso, dated 18 April 1958