# Naturalists Free to read here, from Project Gutenberg. 42 titles; page 1 of 1. - [Life and Letters of Charles Darwin — Volume 1](https://invisiblenetwork.ai/books/gutenberg/2087) by Charles Darwin - [More Letters of Charles Darwin — Volume 1](https://invisiblenetwork.ai/books/gutenberg/2739) by Charles Darwin - [My First Summer in the Sierra](https://invisiblenetwork.ai/books/gutenberg/32540) by John Muir - [The Autobiography of Charles Darwin](https://invisiblenetwork.ai/books/gutenberg/2010) by Charles Darwin - [Lamarck, the Founder of Evolution: His Life and Work](https://invisiblenetwork.ai/books/gutenberg/20556) by A. S. Packard - [The Mountains of California](https://invisiblenetwork.ai/books/gutenberg/10012) by John Muir - [Familiar Letters](https://invisiblenetwork.ai/books/gutenberg/43523) by Henry David Thoreau - [Life and Letters of Charles Darwin — Volume 2](https://invisiblenetwork.ai/books/gutenberg/2088) by Charles Darwin - [The Journal of a Disappointed Man](https://invisiblenetwork.ai/books/gutenberg/39585) by W. N. P. Barbellion - [Charles Darwin: His Life Told in an Autobiographical Chapter, and in a Selected Series of His Published Letters](https://invisiblenetwork.ai/books/gutenberg/38629) by Charles Darwin - [Audubon and His Journals, Volume 2](https://invisiblenetwork.ai/books/gutenberg/39979) by John James Audubon - [Audubon and His Journals, Volume 1](https://invisiblenetwork.ai/books/gutenberg/39975) by John James Audubon - [Henry D. Thoreau](https://invisiblenetwork.ai/books/gutenberg/51426) by F. B. Sanborn - [Alfred Russel Wallace: Letters and Reminiscences, Vol. 1](https://invisiblenetwork.ai/books/gutenberg/15997) by Alfred Russel Wallace and James Marchant, Sir - [The Story of My Boyhood and Youth](https://invisiblenetwork.ai/books/gutenberg/18359) by John Muir - [Alfred Russel Wallace: Letters and Reminiscences, Vol. 2](https://invisiblenetwork.ai/books/gutenberg/15998) by Alfred Russel Wallace and James Marchant, Sir - [More Letters of Charles Darwin — Volume 2](https://invisiblenetwork.ai/books/gutenberg/2740) by Charles Darwin - [A Thousand-Mile Walk to the Gulf](https://invisiblenetwork.ai/books/gutenberg/60749) by John Muir - [The outermost house](https://invisiblenetwork.ai/books/gutenberg/73328) by Henry Beston - [Travels in Alaska](https://invisiblenetwork.ai/books/gutenberg/7345) by John Muir - [The Story of My Heart: An Autobiography](https://invisiblenetwork.ai/books/gutenberg/2317) by Richard Jefferies - [Life and Letters of Thomas Henry Huxley — Volume 1](https://invisiblenetwork.ai/books/gutenberg/5084) by Thomas Henry Huxley - [Darwin](https://invisiblenetwork.ai/books/gutenberg/70803) by Gamaliel Bradford - [The Mentor: American Naturalists, Vol. 7, Num. 9, Serial No. 181, June 15, 1919](https://invisiblenetwork.ai/books/gutenberg/46482) by Ernest Ingersoll - [Life and Letters of Thomas Henry Huxley — Volume 3](https://invisiblenetwork.ai/books/gutenberg/5799) by Thomas Henry Huxley - [The Story of Scotch](https://invisiblenetwork.ai/books/gutenberg/42559) by Enos A. Mills - [The Life and Letters of George John Romanes, M.A., LL.D., F.R.S.](https://invisiblenetwork.ai/books/gutenberg/49182) by George John Romanes and Ethel Duncan Romanes - [Life and Letters of Thomas Henry Huxley — Volume 2](https://invisiblenetwork.ai/books/gutenberg/5226) by Thomas Henry Huxley - [John James Audubon](https://invisiblenetwork.ai/books/gutenberg/7404) by John Burroughs - [Letters to a Friend, Written to Mrs. Ezra S. Carr, 1866-1879](https://invisiblenetwork.ai/books/gutenberg/56130) by John Muir - [My Boyhood](https://invisiblenetwork.ai/books/gutenberg/7280) by John Burroughs - [Nat the Naturalist: A Boy's Adventures in the Eastern Seas](https://invisiblenetwork.ai/books/gutenberg/21356) by George Manville Fenn - [Frank, the Young Naturalist](https://invisiblenetwork.ai/books/gutenberg/12405) by Harry Castlemon - [Our Friend John Burroughs](https://invisiblenetwork.ai/books/gutenberg/6561) by Clara Barrus - [Bomba the jungle boy](https://invisiblenetwork.ai/books/gutenberg/70572) by Roy Rockwood - [Rambles of a Naturalist](https://invisiblenetwork.ai/books/gutenberg/36304) by John D. Godman - [Through Forest and Stream: The Quest of the Quetzal](https://invisiblenetwork.ai/books/gutenberg/23497) by George Manville Fenn - [Heroes of science](https://invisiblenetwork.ai/books/gutenberg/70356) by P. Martin Duncan - [Sechs Jahre in Surinam](https://invisiblenetwork.ai/books/gutenberg/47063) by A. Kappler - [Impressions of great naturalists](https://invisiblenetwork.ai/books/gutenberg/77622) by Henry Fairfield Osborn - [Voyage à Montbard](https://invisiblenetwork.ai/books/gutenberg/72990) by Marie-Jean Hérault de Séchelles - [Henry Thoreau, bachelor of nature](https://invisiblenetwork.ai/books/gutenberg/78810) by Léon Bazalgette