Madrid, 17 December 1936 - Institutional correspondence Antonio Rodríguez Morey's, Manuel Azaña's and Jesús Hernández Tomás's letter to Pablo Picasso
New York, 31 December 1959 - Institutional correspondence Alfred H. Barr Jr.'s letter Pablo Picasso, dated 31 December 1959
Paris, 17 November 1959 - Institutional correspondence A letter from the Groupe d'étudiants d'espagnol to Pablo Picasso
Sariñena (Huesca), 18 September 1936 - Institutional correspondence A letter from Francisco Ruiz (Jean Aaron) to Pablo Picasso
Madrid, 22 September 1936 - Institutional correspondence Francisco Sánchez Cantón's telegram to Pablo Picasso