The Thoreau Society
https://www.thoreausociety.org/
This is the website of The Thoreau Society, which aims to keep Thoreau's life and works alive. The website includes biographical information on Thoreau, as well as scholarly research and information for educators.
The Walden Woods Project
The Walden Woods Project is another organization working to preserve Thoreau's legacy, as well as the land where he lived on Walden Pond near Concord, Massachusetts. The website includes information on Walden Pond, links to documentaries, research, and information for educators. It also features the Project's digital collections.