Today in history, the United States formally entered World War I.
During World War I, the impact of the poster as a means of communication was greater than at any other time during history. The ability of posters to inspire, inform, and persuade combined with vibrant design trends in many of the participating countries to produce thousands of interesting visual works.
Below are only a few of the approximately 1,900 posters created between 1914 and 1920 that have been made available by the Library of Congress Prints & Photographs Division.
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