Columbia subject headings:
Frankfurt am Main (Germany)--Cultural policy--History.
Frankfurt am Main (Germany)--History.
Middle class--Germany--Frankfurt am Main--History.
Harvard subject headings:
Frankfurt am Main (Germany)--Cultural policy--History.
Frankfurt am Main (Germany)--History
Middle class--Germany--Frankfurt am Main--History.
Princeton subject headings:
Arts, German.
Frankfurt am Main (Germany)--Cultural policy--History--19th century.
Frankfurt am Main (Germany)--Cultural policy--History--20th century.
Frankfurt am Main (Germany)--Intellectual life.