Columbia subject headings:
Library Company of Philadelphia--Catalogs.
Rare books--Catalogs.
Rare books--Pennsylvania--Philadelphia--Bibliography--Catalogs.
Harvard subject headings:
Library Company of Philadelphia--Catalogs.
Rare books--Pennsylvania--Philadelphia--Bibliography--Catalogs
Princeton subject headings:
Catalogs.
Library Company of Philadelphia--Catalogs.
Rare books--Pennsylvania--Philadelphia--Bibliography--Catalogs.