Columbia subject headings:
Homosexuality--Europe--History--19th century.
Homosexuality--United States--History--19th century.
Sodomy--Europe--History--19th century.
Sodomy--United States--History--19th century.
Harvard subject headings:
Gays--Europe--History--19th century.
Gays--United States--History--19th century.
Homosexuality--Europe--History--19th century.
Homosexuality--United States--History--19th century.
Princeton subject headings:
Homosexuality--Europe--History--19th century.
Homosexuality--United States--History--19th century.
Sodomy--Europe--History--19th century.
Sodomy--United States--History--19th century.