Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Henry David Thoreau
Adam Smith
Ernest Thompson Seton
Robert Sterling Yard
Francis Hobart Herrick
the Elder Pliny
Thomas Wallace Knox
Charles Darwin
Joseph Dalton Hooker
A. H. Cooke and F. R. C. Reed
Frank Cowan
R. G. Latham, F. K. J. Shenton, Samuel Phillips, Edward Forbes, Richard Owen, and George Scharf
British Association for the Advancement of Science
David Sharp
Leo E. Miller
Henry Walter Bates
William T. Hornaday
Abel Chapman and Walter John Buck
Henry Ridgely Evans
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.