New York, 4 November 1944 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 4 November 1944
Publication - Exhibition catalogue Spain. Twentieth Century. Works from the Museo Nacional Reina Sofía
14 June 1997 - Newspapers The PNV (Basque Nationalist Party) secures a commitment from the PP (People's Party) for the temporary transfer of "Gernika" to Bilbao
15 June 1997 - Newspapers Valencia believes the transfer of "Gernika" and not the Lady of Elche is unfair
14 June 1997 - Newspapers A proposal by the PNV (Basque Nationalist Party) in Congress reopens the controversy over the transfer of «Guernica»
1944 - Exhibition catalogue Exhibition catalogue for Picasso, organised by the Sociedad de Arte Moderno , Mexico
Mexico City, 21 April 1944 - Institutional correspondence A letter from Luis de Zulueta to Jorge Enciso
Mexico City, 24 September 1944 - Personal correspondence Juan Larrea's letter to a Pablo Picasso, dated 24 September 1944
1944 - Internal museum documents Dossier on the exhibition at the Sociedad de Arte Moderno, Mexico, with the connection between the works, costs, loans, etc.
5 October 1944 - Newspapers Picasso declares his affiliation with the Party of the French Renaissance
New York, 25 September 1944 - Institutional correspondence Alfred H. Barr Jr.'s postcard to Pablo Picasso
New York, 31 October 1944 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso
New York, October 8, 1992 and April 16, 1997 - Interview Extracts of Francis Frascina in conversation with Jon Hendricks
