Columbia subject headings:
Art, German--17th century.
Art, German--20th century.
Art, German.
Artists--Germany--Biography.
Summers family.
Harvard subject headings:
Furniture--Germany--History.
Sculpture, German.
Sculpture, Modern--17th century--Germany.
Sculpture, Modern--18th century--Germany.
Sculpture, Modern--19th century--Germany.
Summers family.
Princeton subject headings:
Art, German--Germany (West)--Künzelsau.
Art, Modern--17th century.
Art, Modern--18th century.
Art, Modern--19th century.
Artists--Germany (West)--Künzelsau.
Summers family.