Columbia subject headings:
Harvard subject headings:
Art, European--17th century--Exhibitions.
Art, European--18th century--Exhibitions
Art, European--19th century--Exhibitions
Art--Collectors and collecting--Germany--Bad Homburg vor der Höhe--Exhibitions.
Art--Private collections--Germany--Bad Homburg vor der Höhe--Exhibitions.
Leonhard family--Art collections--Exhibitions.
Princeton subject headings:
Art--Germany--Bad Homburg vor der Höhe--Exhibitions.
Leonhard family--Art collections--Exhibitions.