Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Charles Kingsley
Augusta Foote Arnold
R. Cadwallader Smith
Elizabeth Cabot Cary Agassiz and Alexander Agassiz
William S. Furneaux
Edward Step
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.