Columbia subject headings:
Harvard subject headings:
Authors, American--19th century--Journeys--Maine.
Maine--Description and travel.
Piscataquis County (Me.)--Description and travel.
Thoreau, Henry David, 1817-1862--Journeys--Maine.
Princeton subject headings:
Authors, American--19th century--Travel--Maine.
Maine--Description and travel.
Piscataquis County (Me.)--Description and travel.
Thoreau, Henry David, 1817-1862--Travel--Maine.