Madrid, 1 September 1977 - Institutional correspondence A letter from Jesús Madalena to José Mario Armero
Saint Louis, 6 April 1940 - Institutional correspondence James B. Musick's letter to Pablo Picasso, dated 6 April 1940
Saint Louis, 16 April 1940 - Institutional correspondence James B. Musick's letter to Pablo Picasso, dated 16 April 1940
New York, 10 September 1981 - Internal museum documents An internal letter from Louis Estrada to Eloise Ricciardelli