Columbia subject headings:
Painting, Modern--20th century--Catalogs.
Painting--New York (State)--New York--Catalogs.
Rübel, Elizabeth--Art collections.
Rübel, Peter--Art collections.
Harvard subject headings:
Painting, European--Catalogs.
Painting, Modern--20th century--Europe--Catalogs.
Painting--Private collections--New York (State)--New York--Catalogs.
Rübel, Elizabeth--Art collections--Catalogs.
Rübel, Peter--Art collections--Catalogs.
Princeton subject headings: