Columbia subject headings:
Civil rights--United States.
Sex and law--United States.
Harvard subject headings:
Civil rights--United States
Gays--Legal status, laws, etc.--United States--Cases.
Sex and law--United States
Sex and law--United States--Cases.
Sex discrimination--Law and legislation--United States--Cases.
Princeton subject headings:
Gays--Legal status, laws, etc.--United States--Cases.
Same-sex marriage--United States--Cases.
Sex and law--United States--Cases.
Sex discrimination--Law and legislation--United States--Cases.