- HTML (Single page, 59 KB) at the American Literary Classics Library
- Multi-format (HTML, EPUB, Kindle, Text) at Project Gutenberg
- Audio Formats (Ogg Vorbis, iTunes, MP3, Speex) at Project Gutenberg
Available at Amazon.com:
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- Paperback edition of both Walden and Civil Disobedience, one volume (Penguin USA, 1986, 431 pg.).
- Audio Cassette, read by Archibald MacLeish (Harper Audio, 1998).
All links verified on or after July 18, 2020