Columbia subject headings:
Twain, Mark, 1835-1910.
Harvard subject headings:
Community life in literature.
Literature and society--United States--History--19th century.
Twain, Mark, 1835-1910--Political and social views.
Princeton subject headings:
Community life in literature.
Literature and society--United States--History--19th century.
Twain, Mark, 1835-1910--Political and social views.