National Archives and Records Administration II, RG 59, Records of the U. S. Department of State relating to internal affairs of Romania 1910-1944, Wilmington, Del. 1981 (Microfilm): Doc. 871.4016/253. Original in English.
National Archives and Records Administration II, Records of the Department of State relating , Doc. to internal affairs of Romania 1910-1944, Wilmington, Del. 1981 (Microfilm-Edition): Doc 871.4016/271, p. 2, 4f. Original in English.
Archivio Storico Diplomatico del Ministero degli Affari Esteri, AG Uff IV, Posizione S.E. 27.869, busta A-B, fasc. Boemia e Moravia. Original in Italian.