Paris, 28 October 1953 - Institutional correspondence Maria Oliva Fraga's letter to Arturo Profili, dated 28 October 1953
Paris, 5 November 1953 - Institutional correspondence Maria Oliva Fraga's letter to Arturo Profili, dated 5 November 1953
8 May 2017 - Concert After Guernica. A Sinfonietta by the Reina Sofía Music School, conducted by Baldur Brönnimann