New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 10 March 1955
New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 10 March 1955
New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Dorothy Miller and Dorothy Dudley
New York, 11 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 11 March 1955
New York, 2 November 1964 - Institutional correspondence Alfred H. Barr Jr.'s letter to the editor of The Art Gallery