Northampton, Massachusetts, 16 May 1939 - Institutional correspondence Jere Abbott's letter to Sidney Janis
ca. 1981 - Newspapers The Guernica Imbroglio. Al international Tug-of-War over Picasso's Protest Painting
Horseheads, New York, 23 January 1956 - Management of reproduction rights Hugh Thomas's letter to Alfred H. Barr Jr.