Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Frank Gee Patchin
Various
W. W. Jacobs
James Causey
Mack Reynolds
Aaron Hill
J. A. Harvie-Brown and John Cordeaux
Lee R. Dice
Louis Tracy
Louise Forsslund
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.