Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Alexander von Humboldt
Thomas Henry Huxley
Hippolyt Julius Haas
John Hay
Franklin K. Lane
Olinto Marinelli
Anonymous
Henry S. Fitch and Ronald L. McGregor
Robert Barnwell Roosevelt
14th earl of James Sinclair Caithness
Rodney Sydes Ellsworth
Robert Ottiwell Gifford-Bennet
Various
Merlin K. Potts and Russell K. Grater
Harold Warren Dobyns and Stanley Paul Young
Thomas Routledge
Horace Woollaston Monckton
James E. Deacon and Artie L. Metcalf
Edmund Selous
Lawrence J. Burpee
Edward Bascome
Charles M. Pepper
William Henry Holmes
Armin Hajman Koller
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.