Columbia subject headings:
Harvard subject headings:
Concentration camp inmates--Germany--Potsdam--History--Exhibitions.
Concentration camps--Germany--Potsdam--History--Exhibitions.
Political prisoners--Germany--Potsdam--Biography--Exhibitions.
Prisoners--Germany--Potsdam--Interviews--Exhibitions.
Prisons--Germany--Potsdam--History--Exhibitions.
Princeton subject headings:
Police--Germany--Potsdam--Exhibitions.
Prisons--Germany--Potsdam--Exhibitions.