Hildegard Beetz, letter to Wilhelm Höttl, German consulate, Lugano, March 3, 1944.

Wilhelm Höttl to Hildegard Beetz, Vienna, February 15, 1944.

Peniston-Bird and Vickers, Gender and the Second World War.

“The RSHA and Edda Ciano in Switzerland”, June 16, 1945.

Renzo Allegri, “Nel racconto di un sacerdote”.

French, “Hildegard Beetz, nee Burkhardt, SD Executive and Agent”, June 18, 1945.

Ray Moseley, Mussolini’s Shadow.

[Hildegard Beetz], report to Dr. Hügel, Cernobbio, June 7, 1944, item 53, Central Intelligence Agency Archives.

Walter Segna, Interrogation Report, May 13, 1945.

Hildegard Beetz, letter to Wilhelm Höttl, Como, Cernobbio, March 30, 1944.

“Final Interrogation Report of SS Stubaf Klaus Hugel”, June 12–13, 1945, XARZ–18937, Central Intelligence Agency Archives; Hildegard Beetz, letter to Dr. Hügel, Como, Cernobbio, June 7, 1944.

[Hildegard Beetz], report to Dr. Hügel, Cernobbio, June, 28, 1944.

Andrea Niccoletti, “The Decline and Fall of Edda Ciano”, n. p.

American intelligence reports: Special Interrogation Report, Frau Hildegard Beetz, Chief CIB, United States Forces European Theater, to SCI Detachment, United States Forces European Theater, July 9, 1945, X–106, Central Intelligence Agency Archives.

“Subject: RSHA and Edda Ciano in Switzerland”, July 19, 1945.