Columbia subject headings:
Harvard subject headings:
Americans--France--Tours--History--20th century.
Tours (France)--History, Military--20th century.
United States. Army. American Expeditionary Forces.
World War, 1914-1918--France--Tours.
Princeton subject headings:
Americans--France--Tours--History--20th century.
Tours (France)--History, Military--20th century.
United States. Army. American Expeditionary Forces
World War, 1914-1918--France--Tours.