https://www.archives.gov/topics/wwi
As the largest repository of American World War I records, the National Archives invites you to browse the wealth of records and information documenting the U.S. experience in this conflict, including photographs, documents, audiovisual recordings, educational resources, articles, blog posts, lectures, and events.
April 6, 2017, marks the 100th anniversary of America’s entrance into the Great War. After remaining neutral for three years, the United States reluctantly entered what was supposed to be „The War to End All Wars.“ By declaring war, President Woodrow Wilson committed the nation to join the other Allied countries in their efforts to defeat the German-led Central Powers.
Via http://archivalia.hypotheses.org/64349; © Text: National Archives;