Columbia subject headings:
Manuscripts--United States--Catalogs.
United States--History--Sources--Bibliography--Periodicals.
Harvard subject headings:
Manuscripts--United States--Union lists.
Union catalogs--United States--Periodicals.
United States--History--Sources--Bibliography--Union lists.
Princeton subject headings:
Catalogs.
Manuscripts--United States--Catalogs.
United States--History--Sources--Bibliography--Periodicals.