Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
United States. Central Intelligence Agency
Various
Donald H. Menzel and Lyle Gifford Boyd
George Francis Atkinson
Frederic Brewster Loomis
Ralph Milne Farley
L. Frank Baum
Edward Everett Hale
United States. War Department and United States. Army. Signal Corps
Museum of History and Technology
J. Malcolm Bird
Edward L. Thorndike
H. G. Wells
John Wesley Powell
Bertrand Russell
Thomas Paine
John Tyndall
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.
