Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
William J. Long
Alfred Edmund Brehm
J. Ritzema Bos
Charles Darwin
Daniel Giraud Elliot
Eli Heimans and Jac. P. Thijsse
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.