San Francisco, 12 May 1939 - Institutional correspondence Grace L. McCann Morley's telegram to Sidney Janis
San Francisco, 1 August 1939 - Institutional correspondence Grace L. McCann Morley's letter to Blanche Mahler
New York, 21 August 1939 - Institutional correspondence Evelyn Ahrend's letter to Grace L. McCann Morley, dated 21 August 1939
San Francisco, 12 September 1939 - Institutional correspondence Grace L. McCann Morley's letter to Evelyn Ahrend
Communiqué, Boston, October 4, 2012 - Press release Museum of Fine Arts, Boston, Helps Commemorate the 50th Anniversary of the Cuban Missile Crisis with the Loan of a Picasso to the JFK Library and Museum