Columbia subject headings:
University of Pennsylvania--History--Sources--Bibliography--Catalogs.
University of Pennsylvania. University Museum. Archives--Catalogs.
Harvard subject headings:
University of Pennsylvania--History--Sources--Bibliography--Catalogs.
University of Pennsylvania--History.
University of Pennsylvania. Archives--Catalogs.
Princeton subject headings:
University of Pennsylvania--History--Sources--Bibliography--Catalogs.
University of Pennsylvania. Archives--Catalogs.