São Paulo, 1953 - Institutional correspondence A letter from Paulo E. de Berrêdo Carneiro to Francisco Matarazzo Sobrinho
São Paulo, 11 March 1953 - Institutional correspondence A letter from Paulo E. de Berrêdo Carneiro, dated 11 March 1953
São Paulo, 11 March 1953 - Personal correspondence A letter from Paulo E. de Berrêdo Carneiro, dated 11 March 1953
São Paulo, 19 June 1953 - Institutional correspondence Paulo E. de Berrêdo Carneiro's letter to Arturo Profili
Madrid, 29 May and 10 June 1981 - Institutional correspondence A letter from Felipe Cons Gorostola to Álvaro Martínez Novillo, and reply