Amsterdam and Brussels, 1956 - Exhibition catalogue Guernica: avec 60 études et variantesGuernica: met 60 studies et varianten
1956 - Conferences and articles Text by Emil Langui for the exhibition catalogue Guernica, avec 60 études
Brussels, 19 July 1957 - Institutional correspondence A letter from Émile Langui to Pablo Picasso, 19 July 1957
Brussels, 19 July 1957 - Institutional correspondence Émile Langui's letter to Pablo Picasso, dated 19 July 1957
Brussels, 6 September 1957 - Institutional correspondence Émile Langui's letter to Pablo Picasso, dated 6 September 1957
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