Toronto, 21 July 1939 - Institutional correspondence Phyllis Lane's letter to Evelyn Ahrend, dated 21 July 1939
Toronto, 29 July 1939 - Institutional correspondence Phyllis Lane's letter to Evelyn Ahrend, dated 29 July 1939
Toronto, 12 August 1939 - Institutional correspondence Phyllis Lane's letter to Evelyn Ahrend, dated 12 August 1939
Toronto, 14 August 1939 - Institutional correspondence Phyllis Lane's letter to Evelyn Ahrend, dated 14 August 1939
23 August 1939 - Internal museum documents Certificate of delivery for Guernica and other materials sent from the Spanish Refugee Relief Campaign to the San Francisco Museum of Art
Ellen C. Oppler (ed.), <em>Picasso’s Guernica</em>, New York and London: W. W. Norton & Company, 1988, 236–238 - Essay “How Effective Is Social Protest Art? (Vietnam)”
Siracusa, New York, 15 July 1979 - Institutional correspondence Ellen Oppler's letter to Luisa Kreisberg