Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Denison Olmsted
Svante Arrhenius
William F. Denning
E. Walter Maunder
Homer Eon Flint
Hal Clement
Ray Cummings
Frank Belknap Long
Alan Edward Nourse
Arthur Leo Zagat
Joseph Samachson
Bill Wesley
Robert Emmett McDowell
Henry Hasse
Raymond Z. Gallun
Edmond Hamilton
Leigh Brackett
R. R. Winterbotham
Jack Bradley
S. M. Tenneshaw
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.