Cooperative study of closer economic ties between the United States and Canada 1
 Memorandum by the Assistant Chief of the Division of British Commonwealth Affairs (Foster) to the Director of the Office of European Affairs (Hickerson)
[Washington,] January 2, 1948.
 Memorandum by the Assistant Secretary of State for Economic Affairs (Thorp) to the Under Secretary of State (Lovett)
[Washington,] March 8, 1948.
Washington, April 1st, 1948.
 Memorandum of Conversation, by C. Tyler Wood, Deputy to the Assistant Secretary of State for Economic Affairs
[Washington,] April 27, 1948.