New York, 8 May 1956 - Institutional correspondence Carol K. Uht's letter to Petro (Nelly) Van Doesburg
New York, 9 April 1963 - Institutional correspondence Carol K. Uht's letter to Nelson Rockefeller, dated 9 April 1963
New York, 27 August 1968 - Internal institutional documents Carol K. Uht's letter to Nelson Rockefeller, dated 27 August 1968
New York, 24 March 1969 - Institutional correspondence Carol K. Uht's letter to Nelson Rockefeller, dated 24 March 1969
New York, 30 April 1969 - Institutional correspondence Carol K. Uht's letter to Richard Gordon Hatche
Paris, 12 May 1981 - Institutional correspondence Rafael Fernández Quintanilla's letter to Carlos Robles Piquer
Paris, ca. 1981 - Institutional correspondence A communiqué from Rafael Fernández Quintanilla on the viewpoint of Pablo Picasso's heirs
New York, 20 March 1980 - Internal institutional documents An agreement to deliver Guernica to the Spanish government
Buenos Aires, 28 November 1979 - Institutional correspondence Rafael Fernández Quintanilla's letter to José Joaquín Puig de la Bellacasa
Buenos Aires, 17 September 1979 - Institutional correspondence Rafael Fernández Quintanilla's letter to Javier Tusell, dated 17 September 1979
Communiqué, Seville, February 1, 2006 - Release ¡otra BIACS ¿será posible?! (another BIACS! will be possible?) and Manifesto
Communiqués, Seville, May 30 and June 30, 2005 - Release ¡otra ¿BIACS? es posible! (another BIACS? is possible!)