The following sources were consulted in the preparation of the article “Did Newfoundland almost become America’s 51st state?”
- Newfoundland in the North Atlantic World, 1929–1949
- Agreement and exchanges of notes between the United States and the United Kingdom and protocol between the United States, the United Kingdom, and Canada concerning the defense of Newfoundland, signed March 27, 1941
- Canada Establishes Sovereignty in Newfoundland, 1948–1952
- Governor Sir Humphrey Walwyn on United States Bases in Newfoundland, 15 October 1945
- The Establishment of American and Canadian Military Bases in Newfoundland during the Second World War and Their Impact on the People and Future of the Province of Newfoundland and Labrador
- The 1948 Referendums