From the December 28, 1919 issue of the New York Tribune:
You can get a full-color view of the flag at WorthPoint. The three allies certainly didn’t make up all the world’s population, but they were fighting for all of humanity, à la Woodrow Wilson’s reason for entering World War I – to make the whole world safe for democracy. The controversy in Washington, D.C. occurred while the U.S. Senate was working out whether there was any possible way the Senate could ratify the peace treaty that created the League of Nations. The United States never joined the League; the League never had an official flag.
Nowadays Oskar Pernefeldt has proposed an International Flag of Planet Earth to represent Earth in outer space and to remind us that we all share the planet regardless of what nation we live on.
You can see the League sheet music at the Library of Congress
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