Columbia subject headings:
Censorship--United States--History.
Erotic literature--Censorship.
Erotic literature--History and criticism.
Obscenity (Law)--United States.
Harvard subject headings:
Censorship--United States--History.
Erotic literature--Censorship.
Obscenity (Law)--United States.
Princeton subject headings:
Censorship--United States--History.
Erotic literature--Censorship.
Obscenity (Law)--United States.