Born in Concord, Mass., in 1817; died in 1862; graduated
from Harvard in 1837; taught school; practised surveying;
lived alone at Walden Pond in 1845-47; a friend of Emerson
and Alcott; imprisoned for refusal to pay a tax he believed
to be unjust; published "A Week on the Concord and Merrimac
Rivers" in 1849, and "Walden" in 1854; "Excursions"
published after his death, with a memoir, by Emerson, "The
Maine Woods" in 1864, "Cape Cod" in 1865; his "Journals" and
other works also published after his death.
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