MoMA, New York, January 8, 1970 - Photograph The Art Workers' Coalition and Guerrilla Art Action Group protest in front of Guernica
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