Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Frank Belknap Long
David Mason
George O. Smith
Murray Leinster
Leigh Richmond and Walt Richmond
John Martin
Dwight V. Swain
Noel M. Loomis
Fox B. Holden
Theodore L. Thomas
James Blish
Leigh Brackett
Lester Del Rey
Randall Garrett
Hank Searls
Milton A. Rothman
John L. Chapman
Michael Shaara
Henry Still
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.