Toronto, 21 July 1939 - Institutional correspondence Phyllis Lane's letter to Evelyn Ahrend, dated 21 July 1939
New York, 3 December 1957 - Internal museum documents A letter from Dorothy C. Miller to Monroe Wheeler
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
New York, 3 May 1968 - Institutional correspondence Dorothy C. Miller's letter to Daniel-Henry Kahnweiler
New York, 21 February 1966 - Management of reproduction rights Dorothy C. Miller's letter to Pearl Moeller