The following exhibit was at the National World War I Museum and Memorial this past year, and is now available as a traveling exhibit. The links provide more information, including a contact if your organization is interested in the exhibit:
The Volunteers: Americans Join World War I, 1914-1919
National World War I Museum Traveling Exhibit
American volunteer organizations contributed immensely to the well-being and welfare of the American men and women serving the American military in WWI, but also to peoples in the war-torn countries around the globe. This special exhibition produced in collaboration with AFS Intercultural Programs shares their inspirational stories.