National Archives and Records Administration II, RG 59, Records of the U. S. Department of State relating to internal affairs of Czechoslovakia 1910-1944, Washington, 1982 (Microfilm): Doc. 860F.4016/83. Original in English.
Archivio Storico Diplomatico del Ministero degli Affari Esteri, AG Uff IV. Posizione S.E. 27.869, busta R, fasc. Romania, copy: busta 17 (1941-1942). Original in Italian.