Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Henry Drummond
L. Frank Baum
Babcock & Wilcox Company
Various
George P. Marsh
Edmund Burke
Sir John Lubbock
Jacob Reighard and H. S. Jennings
Charles Darwin and Sir Francis Darwin
James P. Boyd
Clemence Housman
John Henry Pepper
J. Arthur Thomson
Alphonse de Candolle
Herbert Spencer
George Frederick Kunz and Charles Hugh Stevenson
Edgar Rice Burroughs
Maurice Maeterlinck
United States. Central Intelligence Agency
Jean Baptiste Pierre Antoine de Monet de Lamarck
Lynn Thorndike
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.