Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Charles Ira Coombs
Henry Kuttner
Isaac Asimov
E. Walter Maunder
Enrico Panzacchi
Various
Murray Leinster
Richard Fowler
E. W. Hornung
A. D'Abro
P. Puiseux
Thomas Henry Huxley
Anthony Hope
Henry Harland
George Ellery Hale
Henry Stevens
Garrett Putman Serviss
Hendrik Anthony Kramers and Helge Holst
Charles R. Gibson
Michael Faraday
Alan Edward Nourse
Bernard Keisch
Anonymous
Sir H. H. Bashford
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.