The League of Nations, American Experience, Official Site

Though Wilson championed the League of Nations, the United States would never join.

Why the League of Nations was doomed before it began

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Why Didn't the US Join the League of Nations?

Woodrow Wilson, Biography, Presidency, & Accomplishments

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Isolationism and U.S. Foreign Policy After World War I

How Woodrow Wilson's War Speech to Congress Changed Him – and the Nation, History

The League of Nations: The Quest for World Peace Between the Wars - Smithsonian Associates

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Why the League of Nations was doomed before it began

H. G. Wells on the Idea of a League of Nations - The Atlantic