Columbia subject headings:
Architectural drawing--Germany--Hamburg--19th century.
Architectural drawing--Germany--Hamburg--20th century.
Architectural models--Germany--Hamburg.
Architecture--Germany--Hamburg--Designs and plans.
Harvard subject headings:
Architecture--Germany--Hamburg--Designs and plans.
Hamburg (Germany)--Buildings, structures, etc.--Designs and plans.
Hamburg (Germany)--History.
Princeton subject headings: