Columbia subject headings:
Essen (Germany)--Social conditions--Exhibitions.
Housing--Germany--Essen--History--Exhibitions.
Ruhrlandmuseum Essen--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Architecture, Domestic--Germany (West)--Essen--History--19th century--Exhibitions.
Essen (Germany)--Buildings, structures, etc.--Exhibitions.
Industrial housing--Germany (West)--Essen--History--19th century--Exhibitions.
Working class--Dwellings--Germany (West)--Essen--History--19th century--Exhibitions.