Columbia subject headings:
Art dealers--Biography.
Art, Modern--19th century--History.
Art, Modern--20th century--History.
Art--Marketing--History--19th century.
Art--Marketing--History--20th century.
Harvard subject headings:
Art dealers--Biography.
Art--Marketing--History--19th century.
Art--Marketing--History--20th century.
Princeton subject headings:
Art dealers--Biography.
Art--Marketing--History--19th century.
Art--Marketing--History--20th century.