Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Germany--Bayreuth--Exhibitions.
Grässlin Collection--Exhibitions.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Art--Private collections--Germany--Bayreuth--Exhibitions.
Grässlin Collection--Exhibitions.
Princeton subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Bayreuth--Exhibitions.
Grässlin family--Art collections--Exhibitions.