Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Russell H. Conwell
Robert Silverberg
Joseph Tinker
Milton A. Rothman
Mari Wolf
George O. Smith
Marion Zimmer Bradley
R. R. Winterbotham
Frank Riley
Algis Budrys
Winston K. Marks
Jr. Sam Merwin
Charles D. Cunningham
Neil J. Kenney
Rosetta Luce Gilchrist
Charles E. Fritch
Norman Arkawy and Stanley Henig
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.