New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 10 March 1955
New York, 9 July 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 9 July 1956
New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Dorothy Miller and Dorothy Dudley
New York, 11 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 11 March 1955
New York, 31 March 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 31 March 1956
New York, 30 May 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 30 May 1957
New York, 16 February 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 16 February 1957
New York, 17 June 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter Pablo Picasso, dated 17 June 1957
New York, 17 December 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 17 December 1957
New York, 1957 - Exhibition catalogue Catalogue of the exhibition Picasso: 75th Anniversary Exhibition
New York, 24 September 1957 - Institutional correspondence Virginia Pearson's letter to Alfred H. Barr Jr.
New York, 5 November 1957 - Institutional correspondence Virginia Pearson's letter to Katharine Kuh, dated 5 November 1957
New York, 20 September 1957 - Institutional correspondence Virginia Pearson's letter to Katharine Kuh, dated 20 September 1957
New York, 15 April 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 15 April 1957
New York, 27 February 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 27 February 1956