Columbia subject headings:
Federal government--United States--History--20th century.
United States--History--1913-1921.
United States. Council of National Defense.
World War, 1914-1918--United States.
Harvard subject headings:
Federal government--United States--History--20th century.
United States--History--1913-1921.
United States. Council of National Defense.
World War, 1914-1918--United States
Princeton subject headings:
Federal government--United States--History--20th century.
United States--History--1913-1921.
United States. Council of National Defense
World War, 1914-1918--United States.