National Archives and Records Administration II, RG 59 - Records of the Department of State relating to internal affairs of Poland 1916-1944, Washington 1981 (Mikrofilm-Edition): Doc. 860C.4016. Original in English.
National Archives and Records Administration II, RG 59 - Records of the Department of State relating to internal affairs of Poland 1916-1944, Washington 1981 (Microfilm-Edition), Doc. 860C.4016/603. 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.