Columbia subject headings:
Great Britain--History--Bibliography--Periodicals.
Great Britain--History--Sources--Periodicals.
Manuscripts--Great Britain--Catalogs.
Harvard subject headings:
Great Britain--History--Sources--Bibliography--Periodicals.
Manuscripts--Great Britain--Catalogs--Periodicals.
Princeton subject headings:
Great Britain--History--Sources--Periodicals.
Manuscripts--Great Britain--Periodicals.
Periodicals.