Concept
Version 12
Created by Boundless
Promoting Peace Abroad
Detail from a League of Nations poster, circa 1920
President Calvin Coolidge did not advocate U.S. membership in the League of Nations.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Origin of the League of Nations."
http://en.wikipedia.org/wiki/File:Origin_of_the_League_of_Nations.png
Wikipedia
Public domain.