Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
C. Beringer and J. J. Beringer
Frederic A. Lucas
Various
H. G. Wells
George Biddell Airy
Cecilia Payne-Gaposchkin
Charles Darwin
Ray Bradbury
Enrico Angelo Lodovico Negretti and Joseph Zambra
Richard Lydekker and William Henry Flower
Denison Olmsted
Lord Dunsany
Elisée Reclus
Albert John Nunnamaker and Charles Otto Dhonau
Giovanni Aldini
G. F. Scott Elliot
Walter Jerrold
Philip K. Dick
Thomas Henry Huxley
Cory Doctorow
George Francis Atkinson
F. Marion Crawford
E. E. Smith
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.