Stockholm, 10 October 1956 - Institutional correspondence Bo Wennberg's letter to Willem Sandberg, dated 10 October 1956
Amsterdam, 15 October 1956 - Institutional correspondence Willem Sandberg's letter to Bo Wennberg, dated 15 October 1956
Stockholm, 1 October 1956 - Institutional correspondence Bo Wennberg's letter to Willem Sandberg, dated 1 October 1956 (copy)
Amsterdam, 27 February 1956 - Institutional correspondence Willem Sandberg's letter to Robert Giron, dated 27 February 1956
Brussels, 6 December 1956 - Institutional correspondence Robert Giron's letter to Willem Sandberg, dated 6 December 1956
Stockholm, 7 December 1956 - Institutional correspondence Bo Wennberg's letter to Willem Sandberg, dated 7 December 1956
Amsterdam, 10 December 1956 - Institutional correspondence Willem Sandberg's letter to Robert Giron, dated 10 December 1956
Rotterdam, 1956 - Transport documents A packing list for the delivery of 6 boxes with Guernica and studies from Amsterdam to New York
Paris, 17 May 1956 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 17 May 1956
Amsterdam, 16 January 1957 - Institutional correspondence A telegram from Willem Sandberg to Alfred H. Barr Jr.
New York, 23 January 1957 - Transport documents A letter from the vice-president of W. R. Keating & Company to Willem Sandberg
Amsterdam, 28 January 1957 - Institutional correspondence Willem Sandberg's letter to Robert Giron, dated 28 January 1957
Amsterdam, 28 January 1957 - Institutional correspondence Willem Sandberg's letter to Bo Wennberg, dated 28 January 1957
Brussels, 14 May 1956 - Institutional correspondence A letter from the Spanish ambassador in Belgium to Alberto Martín-Artajo Álvarez
Amsterdam, 6 July 1956 - Institutional correspondence A letter from J. M. Trias de Bes to Alberto Martín-Artajo Álvarez
Stockholm, 1956 - Photograph Photographs of the installation and exhibition of Guernica, avec 60 études at the Nationalmuseum, Stockholm
Stockholm, 1956 - Photograph Photographs of the assembly of the exhibition Guernica, avec 60 études in the Nationalmuseum, Stockholm
![Composition Study [I]. Sketch for Guernica](/sites/default/files/styles/medium/public/documento/GUE-1904.jpg?itok=41EMt7vJ "Composition Study [I]. Sketch for Guernica")