1945 - Internal museum documents Alfred H. Barr Jr.'s notes for the screenplay of the film Guernica by Robert Flaherty
New York, 5 July 1956 - Institutional correspondence William S. Lieberman's letter to Richard Griffith
22 and 23 June 2017 - Conferences and articles Interval 12. Guernica Sequences. The Mural in Documentary Essay Films
Farmington, Connecticut, 20 September 1946 - Personal correspondence James Thrall Soby's letter to William Lieberman
New York, 25 October 1945 - Personal correspondence Alfred H. Barr Jr.'s letter to John E. (Dick) Abbott
