Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
R. A. Lafferty
Robert Sheckley
Hal Clement
Raymond Z. Gallun
Evelyn E. Smith
Charles V. De Vet
Murray Leinster
Allen Kim Lang
Henry Kuttner
Moses Schere
Damon Knight
Jack Williamson
H. Beam Piper
William Dixon Bell
Robert Silverberg
Jack Sharkey
Dwight V. Swain
Manly Banister
Winston K. Marks
Leigh Brackett
Keith Laumer
Mark Clutter
James Stamers
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.