Founded in 1941, the Thoreau Society is the oldest and largest organization dedicated to an American author. It is based in Concord, Massachusetts, USA at the house where Henry David Thoreau was born in 1817. With members from all 50 states and countries around the world, the Society disseminates knowledge about Thoreau by collecting books, manuscripts, and artifacts relating to Thoreau and his contemporaries, by encouraging the use of its extensive collections, and by publishing two periodicals, the Thoreau Society Bulletin and the Concord Saunterer.
The Thoreau Society archives are housed at the Walden Woods Project's Thoreau Institute Library in Lincoln, Massachusetts. This repository includes the collections of Walter Harding and Raymond Adams, two of the foremost authorities on Thoreau and founders of the Thoreau Society; and those of Roland W. Robbins, who uncovered Thoreau's Walden house site.