Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Galileo Galilei and Johannes Kepler
Agnes M. Clerke
Charles Fort
Robert S. Ball
Camille Flammarion
Nostradamus
Alexander von Humboldt
E. W. Bullinger
Adam Smith
Parallax
Muḥammad ibn Aḥmad Bīrūnī
James P. Boyd
John Henry Pepper
Samuel Smiles
David Brewster
Thomas Nathaniel Orchard
Garrett Putman Serviss
Mark Wicks
Orison Swett Marden
Thomas Hardy
Sir Oliver Lodge
Museum of History and Technology
J. Malcolm Bird
Richard Adams Locke
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.