Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Ib Melchior
Murray Leinster
Anonymous
Inc. Columbia Broadcasting System and United States. Office of Education
Harlan Ellison
Tom W. Harris
Edmond Hamilton
Keith Laumer
David Mason
J. Anthony Ferlaine
Harry Lorayne
Henry Slesar
Alfred Bester
Kirk Drussai and Garen Drussai
R. R. Winterbotham
Oney Fred Sweet
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.