Poropat, Cesar (2000). "The Corncob Fleet on D-Day". Beyond the Palisades. Bruce Poropat. Retrieved 12 September 2008. This webpage consists of excerpts from Cesar Poropat's privately published 2000 book, Beyond the Palisades.
See: "Shipping and mails"(PDF). The New York Times. 16 August 1919. p. 14. Retrieved 12 September 2008. Also: "Shipping". The Times. 17 March 1920. p. 2. "Mail and shipping intelligence". The Times. 26 April 1920. p. 24. "Mail and shipping intelligence". The Times. 17 December 1920. p. 17.
"Shipping and mails"(PDF). The New York Times. 8 September 1922. p. 23. Retrieved 12 September 2008.
"Shipping and mails"(PDF). The New York Times. 12 December 1922. p. 39. Retrieved 12 September 2008.
Crichton, Tom (4 April 2004). T. Horodysky (ed.). "The Useful Death of the MV Galveston". American Merchant Marine at War. T. Horodysky. Retrieved 12 September 2008.
Vaagsnes' St. Olav's medal with Oak Branch was awarded posthumously in 1989. See: Lawson, Siri (12 August 2008). "M/T Britannia". Norwegian Merchant Fleet 1939-1945. WarSailors.com. Retrieved 6 November 2008.
Lawson, Siri (12 August 2008). "M/T Britannia". Norwegian Merchant Fleet 1939-1945. WarSailors.com. Retrieved 6 November 2008.
Lawson, Siri (12 August 2008). "Norwegian War Medals". Norwegian Merchant Fleet 1939-1945. WarSailors.com. Retrieved 6 November 2008.