Columbia subject headings:
Harvard subject headings:
Adenauer, Konrad, 1876-1967--Archives--Exhibitions.
Adenauer, Konrad, 1876-1967--Homes and haunts--Germany--Cologne--Pictorial works--Exhibitions.
Cologne (Germany)--History--20th century--Archival resources--Exhibitions.
Cologne (Germany)--History--20th century--Pictorial works--Exhibitions.
Princeton subject headings:
Adenauer, Konrad, 1876-1967.
Cologne (Germany)--History--20th century.
Cologne (Germany)--Politics and government--20th century.
Mayors--Germany--Cologne--Exhibitions.