Columbia subject headings:
United States--Territories and possessions--History--Sources.
United States. Office of Territories--Bibliography.
Harvard subject headings:
United States--Territories and possessions--History--Sources--Bibliography--Catalogs.
United States--Territories and possessions--History--Sources.
United States. Office of Territories--Archives--Catalogs.
United States. Office of Territories--Bibliography.
Princeton subject headings: