John Burroughs Looking across Walden Pond from Thoreau's Nook, 1917

Naturalist John Burroughs made several visits to Concord, Massachusetts where two of his early literary influences -- Henry David Thoreau and Ralph Waldo Emerson -- once resided. In October 1917, Burroughs returned for a brief visit. Burroughs and his traveling companions stopped at Emerson's home and gravesite, Walden Pond and other familiar sites before heading back home.