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2. Adams, Sherman. Letter to Mr. Louis de Rochemont. 5 June 1957. Eisenhower Presidential Library.
3. Androshchuk, Fedir. Viking Swords: Swords and Social Aspects of Weaponry in Viking Age Societies. Stockholm: The Swedish History Museum, 2014.
4. Aurand, E. P. Memorandum for the President. 4 June 1957. Eisenhower Presidential Library. Blindheim, Charlotte, B. Heredahl-Larsen, and Anne S. Ingstad. Kaupang-funnene. Bind II. Gravplassene i Bikjholbergene/Lamøya: Undersøkelsene 1950-1957. Del A. Gravskikk, Oslo, 1999.
5. Boehm, Hermann. “Die politische Entwicklung in Norwegenen der Zeit siet der Besetzung 1940 bis zum Frühjahr 1943.” Undated position paper. Handmaterial Ob.d.M., Denkschrift Gen. Adm. Boehm (Norwegen 1940-1943). RM 6/89, Bendesarchiv-Militärarchiv Freiburg, Germany.