Columbia subject headings:
Counts palatine--Library--Exhibitions.
Heidelberg (Germany)--Intellectual life--Exhibitions.
Libraries--Germany--Heidelberg--History--1400-1600--Exhibitions.
Palatinate (Germany)--Intellectual life--Exhibitions.
Universitätsbibliothek Heidelberg--History--Exhibitions.
Harvard subject headings:
Palatinate (Germany)--History.
Universitätsbibliothek Heidelberg--History.
Princeton subject headings: