Columbia subject headings:
Harvard subject headings:
Families--Germany--Frankfurt am Main--History.
Frankfurt am Main (Germany)--History
Guilds--Germany--Frankfurt am Main--History.
Labor--Social aspects--Germany--Frankfurt am Main--History.
Princeton subject headings:
Families--Germany--Frankfurt am Main--History.
Family-owned business enterprises--Germany--Frankfurt am Main--History.
Guilds--Germany--Frankfurt am Main--History.
Handicraft--Germany--Frankfurt am Main--History.
Labor--Social aspects--Germany--Frankfurt am Main--History.