Source: Ladislas Farago,The Broken Seal: "Operation Magic" and the Secret Road to Pearl Harbor (New York: Random House, 1967).

To Pearl Harbor.

The Day of Infamy.

The End of Isolation.

Germany Declares War.

Sources:

Robert A. Dallek, Franklin D. Roosevelt and American Foreign Policy, 1932-1945 (New York: Oxford University Press, 1981);

Herbert Feis, The Road To Pearl Harbor (Princeton, N.J.: Princeton University Press, 1971);

Arnold A. Offner, American Appeasement: United States Foreign Policy and Germany, 1933-1938 (New York: Norton, 1976);

John E. Wiltz, From Isolation to War, 1931-1941 (Arlington Heights, I11.: AHM Publishing, 1968).