Columbia subject headings:
Artists' studios--Europe.
Artists--Europe--Economic conditions.
Artists--Europe--Social conditions.
Harvard subject headings:
Artists' studios--Europe.
Artists--Economic conditions.
Artists--Europe--Economic conditions.
Artists--Europe--Social conditions.
Artists--Professional relationships.
Artists--Social conditions.
Princeton subject headings:
Artists--Economic conditions--History.
Artists--Professional relationships--History.
Artists--Social conditions--History.