Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Jules Verne
Bob Webster
Galileo Galilei and Johannes Kepler
II Victor Appleton
Edgar Rice Burroughs
William Carpenter
Parallax
John Uri Lloyd
Percival Lowell
1060 downloads
Various
Daniel Kirkwood
Denison Olmsted
Richard A. Proctor
David Morrison and Jane Samz
Ralph Milne Farley
James Nasmyth and James Carpenter
Garrett Putman Serviss
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.