Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
William Oberfield
Peter Baily
Daniel F. Galouye
H. G. Wells
Roy Rockwood
John Henry Goldfrap
Irwin R. Franklyn
Marion Zimmer Bradley
Hugh McAlister
Victor Appleton
Roald Amundsen
Edward W. Ludwig
John Barrett
James E. Gunn
Bryce Walton
Otto Lilienthal
Frank M. Robinson
Alfred Coppel
Winston K. Marks
H. Beam Piper
Stephen Marlowe
George Revelle
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.