Amsterdam, 18 January 1956 - Transport documents Hans Ludwig Cohn Jaffé's letter to Holland-Amerika Lijn
Amsterdam, 17 October 1956 - Institutional correspondence A letter from Hans Ludwig Cohn Jaffé's to the editors of the newspaper De Tijd
22 November 1980 - Institutional correspondence Rafael Fernández Quintanilla's letter to Javier Tusell, dated 22 November 1980