Columbia subject headings:
Artists and models in art--Exhibitions.
Circus in art--Exhibitions.
Clowns in art--Exhibitions.
Harvard subject headings:
Artists and models in art--Exhibitions
Circus in art--Exhibitions.
Clowns in art--Exhibitions.
Princeton subject headings:
Artists and models in art--Exhibitions.
Circus in art--Expositions.
Clowns in art--Exhibitions.