Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
George Frederick Kunz
John Mastin
W. B. Yeats
Isidore Kozminsky
Leopold Wagner
Harold MacGrath
G. Hartwig
Geological Survey
George Frederick Herbert Smith
Frank Bertram Wade
Paul E. Desautels
Elbert A. King
Adela E. Orpen
Meyer D. Rothschild
John Frederick Adolphus McNair and Thomas Lambert Barlow
Augustus C. Hamlin
John George Francis
Sir E. Ray Lankester
Lady Sarah Davison Nicolas
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.