Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Pictorial Photographers of America
William Henry Jackson
Frederick C. Bakewell
Harry Alverson Franck
Arthur Conan Doyle
David Morrison and Jane Samz
Various
Edward M. Estabrooke
Harold Donaldson Eberlein
Harry Johnston
Beckles Willson
Annie S. Peck
W. M. Flinders Petrie
August Strindberg
Unknown
H. G. Wells
Canadian Kodak Company
George William Erskine Russell
W. G. Burn Murdoch
Boone and Crockett Club
United States. National Aeronautics and Space Administration
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.