National Archives and Records Administration II, Records of the Department of State relating to internal affairs of Czechoslovakia 1910-1944, Washington 1982 (Mikrofilm-Edition), Doc. 860F.4016/68. Original in English.
1939-03-10 | Biddle Jr., Anthony J. Drexel | Poland
National Archives and Records Administration II, RG 59, Records of the Department of State relating to internal affairs of Poland 1916-1944, Washington, D.C. 1981 (Microfilm), Doc. 860C.4016/589. 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.