Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
John Munro
Erik Fennel
Frank Aubrey
Charles Darwin
Ray Bradbury
Harry Harrison
Kris Neville
Richard A. Proctor
Albert dePina
Keith Laumer
Lester Del Rey
Murray Leinster
Thomas Burnet
Homer Eon Flint
Leigh Brackett and Ray Bradbury
George O. Smith
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Algis Budrys
Carey Rockwell
A. Frederick Collins
Tom Godwin
Jerry Sohl
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.