Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Edgar Rice Burroughs
Harold Jacoby
E. Stenhouse
J. D. Beresford
Richard Threlfall
W. P. Pycraft
Jules Verne
Maynard Shipley
Mark Clifton and Alex Apostolides
H. G. Wells
Murray Leinster
United States. Congress. House. Committee on Science and Astronautics.
Alice Ilgenfritz Jones and Ella Merchant
J. M. Robertson
Various
Thomas Greenhill
Oliver Perry Hay
Silvanus P. Thompson
Edward Sylvester Ellis
L. David Mech, Louis Daniel Frenzel, Robert R. Ream, John W. Winship, and P. D. Karns
Arabella B. Buckley
Thomas Henry Huxley
J. Ellard Gore
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.