Columbia subject headings:
Charlemagne Tower Collection (Historical Society of Pennsylvania)--Catalogs.
Historical Society of Pennsylvania--Catalogs.
Law--United States--Bibliography--Catalogs.
United States--History--Colonial period, ca. 1600-1775--Bibliography--Catalogs.
Harvard subject headings:
America--Bibliography--Catalogs.
Law--United States--Bibliography.
United States--History--Colonial period, ca. 1600-1775--Sources.
Princeton subject headings:
America--Bibliography--Catalogs.
Catalogs.
Law--United States--Bibliography.
United States--History--Colonial period, ca. 1600-1775--Sources.