Paris, 28 March 1939 - Personal correspondence Pablo Picasso's letter to Roland Penrose, dated 28 March 1939
London, 15 April 1939 - Personal correspondence Roland Penrose's letter to Pablo Picasso, dated 15 April 1939
New York, 24 October 1945 - Institutional correspondence A letter from Curt Valentin to Roland Penrose
Paris, 23 August 1951 - Personal correspondence Pablo Picasso's letter to Roland Penrose, dated 23 August 1951
London, 20 August 1938 - Personal correspondence E. L. T. Mesens' letter to Roland Penrose, dated 20 August 1938
London, 31 August 1938 - Personal correspondence E. L. T. Mesens' letter to Roland Penrose, dated 31 August 1938
22 May 1957 - Press release and communication A press release on the publication of Portrait of Picasso, by Roland Penrose