Columbia subject headings:
Twain, Mark, 1835-1910--Political and social views.
Twain, Mark, 1835-1910. Adventures of Huckleberry Finn.
Harvard subject headings:
Boys in literature
Fugitive slaves in literature.
Literature and society--United States--History--19th century.
Mississippi River--In literature.
Race relations in literature.
Social classes in literature.
Social problems in literature.
Twain, Mark, 1835-1910--Political and social views.
Twain, Mark, 1835-1910. Adventures of Huckleberry Finn
Princeton subject headings:
Boys in literature.
Literature and society--United States--History--19th century.
Mississippi River--In literature.
Race relations in literature.
Social classes in literature.
Social problems in literature.
Twain, Mark, 1835-1910--Political and social views.
Twain, Mark, 1835-1910. Adventures of Huckleberry Finn.