New York, 9 July 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 9 July 1956
New York, 20 February 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Nelson Rockefeller
New York, 31 March 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 31 March 1956
New York, 12 May 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 12 May 1956
Paris, 17 May 1956 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 17 May 1956
2 February 1956 - Transport documents A cheque from Nelson Rockefeller to W. R. Keating & Company for the delivery of the replica Guernica tapestry
New York, 10 February 1956 - Institutional correspondence A letter from Louise A. Boyer to Petro (Nelly) Van Doesburg
New York, 10 February 1956 - Institutional correspondence A letter from Alfred H. Barr Jr. to Petro (Nelly) Van Doesburg, dated 10 February 1956
Meudon, 13 February 1956 - Institutional correspondence Petro (Nelly) Van Doesburg's letter Alfred H. Barr Jr.
New York, 20 February 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Petro (Nelly) Van Doesburg, dated 20 February 1956
New York, 8 May 1956 - Institutional correspondence Carol K. Uht's letter to Petro (Nelly) Van Doesburg
Paris, 27 February 1958 - Institutional correspondence Daniel-Henry Kahnweiler's letter to Alfred H. Barr Jr., dated 27 February 1958
New York, 18 April 1958 - Institutional correspondence A telegram from Alfred H. Barr Jr. to Pablo Picasso, dated 18 April 1958
ca. 1958 - Internal institutional documents Request sheet for the replica Guernica tapestry, to be included in the exhibition La influencia del cubismo en el diseño de tapices (The Influence of Cubism in Tapestry Designs), in Arras
Horseheads, New York, 23 January 1956 - Management of reproduction rights Hugh Thomas's letter to Alfred H. Barr Jr.
New York, 15 May 1956 - Press release and communication A press release announcing the dates of the exhibition Picasso: 75th Anniversary
New York, 7 March 1956 - Institutional correspondence William S. Lieberman's letter to Porter McCrary