Chicago, 10 October 1939 - Institutional correspondence Isabel Jarvis's letter to the Spanish Refugee Relief Campaign
19 January 1940 - Internal museum documents Circulating exhibition contract for Picasso: Forty Years of His Art, New York, and the City Art Museum of St. Louis, Missouri
Chicago, 12 October 1939 - Institutional correspondence Isabel Jarvis's letter to the Museum of Modern Art, New York
Paris, 2 November 1979 - Personal correspondence A copy of a letter Claude Picasso wrote to William Rubin, director of Painting and Sculpture at MoMA
Paris, 1 March 1975 - Personal correspondence Claude Picasso's letter to William S. Lieberman, dated 1 March 1975