Columbia subject headings:
Authors, American--19th century--Biography.
Twain, Mark, 1835-1910--Homes and haunts--Missouri--Hannibal.
Twain, Mark, 1835-1910.
Harvard subject headings:
Authors, American--19th century--Biography
Authors, American--Homes and haunts--Missouri--Hannibal.
Hannibal (Mo.)--Intellectual life--19th century.
Twain, Mark, 1835-1910
Twain, Mark, 1835-1910--Homes and haunts--Missouri--Hannibal.
Princeton subject headings:
Authors, American--19th century--Biography.
Twain, Mark, 1835-1910--Homes and haunts--Missouri--Hannibal.