Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Dadaism--Exhibitions.
Letter-pictures--Exhibitions.
Surrealism--Exhibitions.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Dadaism--Exhibitions
Letter-pictures--Exhibitions.
Surrealism--Exhibitions
Princeton subject headings:
Art, Modern--20th century--Exhibitions.
Dadaism--Exhibitions.
Letter-pictures--Exhibitions.
Surrealism--Exhibitions.