Columbia subject headings:
Authors, American--19th century--Biography.
Thoreau, Henry David, 1817-1862. Diaries.
Harvard subject headings:
Authors, American--19th century--Biography
Authors, American--19th century--Diaries
Thoreau, Henry David, 1817-1862
Thoreau, Henry David, 1817-1862--Diaries.
Princeton subject headings:
Authors, American--19th century--Biography.
Diaries.
Thoreau, Henry David, 1817-1862--Diaries.