Columbia subject headings:
Art, Modern--20th century.
Art--Political aspects--History--20th century.
Counterculture--History--20th century.
Nineteen sixties.
Nineteen sixty-eight, A.D.
Pop art.
Psychedelic art.
Harvard subject headings:
Art, Modern--20th century
Art--Political aspects
Counterculture.
Nineteen sixties.
Pop art.
Psychedelic art.
Princeton subject headings:
Art, Modern--20th century.
Art--Political aspects.
Counterculture.
Nineteen sixties.
Pop art.
Psychedelic art.