Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Ernst Haeckel
H. N. Hutchinson
Anonymous
Clara Dillingham Pierson
Montagu Browne
William Beebe
Richard South
William Swainson
Camille Flammarion
David Lester Richardson
G. B. Sowerby
Thomas Henry Huxley
Duchess of Margaret Cavendish Newcastle
H. W. Gibson
John Burroughs
John Ruskin
Thornton W. Burgess
John Greenleaf Whittier
Leonard V. Dalton
baron d' Paul Henri Thiry Holbach
Francis C. Woodworth
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H. B. Guppy
Richard M. Weaver
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.