Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Charles Darwin
Lucien Biart
John Muir
Henry Walter Bates
Henry David Thoreau
W. N. P. Barbellion
Richard Jefferies
Henry Beston
Francis Hobart Herrick
Joseph Dalton Hooker
John Burroughs
Sir E. Ray Lankester
Roy Chapman Andrews
August Strindberg
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.