New York, 15 December 1939 - Institutional correspondence Alfred H. Barr Jr.'s telegram to Pablo Picasso, dated 15 December 1939
Paris, 29 May 1947 - Institutional correspondence Daniel-Henry Kahnweiler's letter to Alfred H. Barr Jr., dated 29 May 1947
New York, 30 May 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 30 May 1957
New York, 17 July 1968 - Internal museum documents Jean Volkmer's letter to Bates Lowry, dated 17 July 1968
New York, 28 February 1974 - Institutional correspondence A letter from the Guerrilla Art Action Group to Richard Oldenburg
New York, 9 September 1981 - Institutional correspondence An internal letter from Richard E. Oldenburg to staff at the Museum of Modern Art, New York
Paris, 12 November 1969 - Institutional correspondence A letter from Roland Dumas to William S. Lieberman, dated 12 November 1969
New York, 16 December 1954 - Institutional correspondence A letter from Alfred H. Barr Jr. to William A. M. Burden, René d'Harnoncourt and James Thrall Soby
Paris, 10 February 1955 - Institutional correspondence Daniel-Henry Kahnweiler's letter to Alfred H. Barr Jr., dated 10 February 1955
Pars, 9 February 1955 - Institutional correspondence Pablo Picasso's letter to Alfred H. Barr Jr., dated 9 February 1955
New York, 4 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Maurice Jardot, dated 4 March 1955
New York, 5 July 1956 - Institutional correspondence William S. Lieberman's letter to Richard Griffith
New York, 20 September 1956 - Institutional correspondence William S. Lieberman's letter to Alfred H. Barr Jr.
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
Paris, 17 April 1957 - Institutional correspondence A telegram from Daniel-Henry Kahnweiler to Alfred H. Barr Jr.
New York, 16 September 1957 - Institutional correspondence A letter from Monroe Wheeler to Katharine Kuh