National Archives and Records Administration II, Records of the Department of State relating to internal affairs of Hungary 1930-1944, Washington 1983 (Mikrofilm-Edition): Dokument 864.4016/177, part 1, p. 1, part 2, p. 1 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.