Columbia subject headings:
Art dealers--Germany (West)--Biography.
Art--Collectors and collecting--Interviews.
Ketterer, Roman Norbert.
Stuttgarter Kunstkabinett--History.
Harvard subject headings:
Art auctions--Germany--Stuttgart--History--20th century.
Art dealers--Germany (West)--Biography.
Art dealers--Interviews.
Art museum directors--Interviews.
Art, Modern--20th century
Art--Collectors and collecting--Germany (West)--Interviews.
Art--Collectors and collecting--Switzerland--Interviews.
Expressionism (Art)
Ketterer, Roman Norbert.
Stuttgarter Kunstkabinett.
Princeton subject headings:
Art dealers--Germany (West)--Biography.
Art--Collectors and collecting--Interviews.
Ketterer, Roman Norbert.
Stuttgarter Kunstkabinett--History.