Columbia subject headings:
Art--Germany--Hagen (Arnsberg)--Exhibitions.
Karl-Ernst-Osthaus-Museum--Exhibitions.
Osthaus, Karl Ernst, 1874-1921--Art patronage--Exhibitions.
Harvard subject headings:
Architecture, Modern--20th century--Germany--Exhibitions.
Architecture--Germany--Exhibitions.
Art, German--Exhibitions.
Art, Modern--20th century--Germany--Exhibitions.
Art--Germany (West)--Hagen--Exhibitions.
Art--Germany--Hagen (Arnsberg)--Exhibitions.
Karl-Ernst-Osthaus-Museum--Exhibitions.
Osthaus, Karl Ernst, 1874-1921--Art patronage--Exhibitions.
Princeton subject headings:
Decorative arts--Germany--Hagen (Arnsberg)--History--20th century--Exhibitions.
Hagen (Arnsberg, Germany)--History--Exhibitions.
Karl-Ernst-Osthaus-Museum--History--Exhibitions.