Columbia subject headings:
Beuys, Joseph--Exhibitions.
Grinten, Franz Joseph van der--Art collections--Exhibitions.
Grinten, Hans van der--Art collections--Exhibitions.
Watercolor painting, German--Germany (West)--20th century--Exhibitions.
Watercolor painting, German--Germany (West)--Exhibitions.
Watercolor painting--Private collections--Germany--Kranenburg (North Rhine-Westphalia)--Exhibitions.
Harvard subject headings:
Beuys, Joseph--Exhibitions.
Grinten, Franz Joseph van der--Art collections--Exhibitions.
Grinten, Hans van der--Art collections--Exhibitions.
Watercolor painting, German--Exhibitions.
Watercolor painting--20th century--Germany--Exhibitions.
Watercolor painting--Private collections--Germany (West)--Kranenburg (North Rhine-Westphalia)--Exhibitions.
Watercolor painting--Private collections--Germany--Kranenburg (North Rhine-Westphalia)--Exhibitions.
Princeton subject headings:
Beuys, Joseph--Exhibitions.
Grinten, Franz Joseph van der--Art collections--Exhibitions.
Grinten, Hans van der--Art collections--Exhibitions.
Watercolor painting, German--Germany (West)--Exhibitions.
Watercolor painting--20th century--Exhibitions.
Watercolor painting--Private collections--Germany (West)--Kranenburg (North Rhine-Westphalia)--Exhibitions.