Bonn, 16 February 1956 - Institutional correspondence Antonio Mª Aguirre's letter to Alberto Martín-Artajo Álvarez
Stockholm, 1956 - Photograph Photographs of the installation and exhibition of Guernica, avec 60 études at the Nationalmuseum, Stockholm
October - December 1956 - Photograph Photograph of the installation of the exhibition Guernica, avec 60 études at the Nationalmuseum, Stockholm