Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Isaac Newton
J. Malcolm Bird
Henri Poincaré
George Henry Lewes
Hugo Magnus
H. W. Conn
August Weismann
Robert Haven Schauffler
Durant Drake
Garet Garrett
W. Whately Smith
William Osmer
Hermann Grothe
marquis de Charles Casaux
James Johnstone
Lancelot Thomas Hogben
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.