Paris, 3 October 1948 - Institutional correspondence Pablo Picasso's letter to Alfred H. Barr Jr., dated 3 October 1948
New York, 28 February 1974 - Institutional correspondence A letter from the Guerrilla Art Action Group to Richard Oldenburg
New York, 5 March 1974 - Institutional correspondence Letter-poem by the Guerrilla Art Action Group send to Franco
28 February 1974 - Photograph The cleaning of Guernica by two restorers after Tony Shafrazi's graffiti
2 March 1974 - Institutional correspondence A letter from Karl Denim, S. S. Kush and Joshua Jericho in defence of Tony Shafrazi
Paris, 18 October 1948 - Institutional correspondence A letter from Mariano Miguel to José Ballester-Gozalvo
Paris, 26 November 1948 - Institutional correspondence A letter from Pablo Picasso to Alfred H. Barr Jr., dated 26 November 1948
New York, 3 December 1948 - Institutional correspondence Alfred H. Barr Jr's letter to Pablo Picasso, dated 3 December 1948
28 February 1974 - Press release and communication The artist Tony Shafrazi has freed Guernica from its chains of ownership and has returned its revolutionary nature