National Archives and Records Administration II, RG 59 - Records of the Department of State relating to the internal affairs of Bulgaria 1910-1944, Washington D.C. 1982 (Microfilm), Doc. 874.4016/45. Original in English.
Japan Center for Asia Historical Materials (JACAR), Minzoku mondai kankei zakken: Yudayajin mondai [Documents on the Issus of Nationalities: The Jewish Issue] B04013207600-10500, 9:147-148. Original in Japanese.
National Archives and Records Administration II, RG 59, Records of the U. S. Department of State relating to internal affairs of Poland 1916-1944, Washington, 1981 (Microfilm): Doc. 860C.4016/617. Original in English.
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.
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.