Columbia subject headings:
Art dealers--Great Britain--Biography.
Arthur Ackermann & Son.
Publishers and publishing--Great Britain.
Harvard subject headings:
Art dealers--Great Britain--Biography.
Art publishing--Great Britain--History.
Arthur Ackermann & Son.
Publishers and publishing--Great Britain--History.
Princeton subject headings:
Ackermann, Rudolph, 1764-1834.
Art dealers--England--London.