Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Fritz Leiber
Randall Garrett and Robert Silverberg
David Mason
James H. Schmitz
Murray Leinster
Joseph Samachson
Hugh Frazier Parker
J. W. N. Sullivan
Fox B. Holden
Daniel F. Galouye
Clifford D. Simak
Hal Clement
Jr. L. J. Stecher
Harlan Ellison
Harriet Pyne Grove
Hayden Howard
Frank Banta
A. de Quatrefages
Southwood Smith
Antero de Quental
Robert Sheckley
Edgar Rice Burroughs
Joseph Farrell
Randall Garrett
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.