Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Albert Einstein
B. G. Jefferis and J. L. Nichols
Robert Boyle
H. Stanley Redgrove
Albert Einstein and H. Minkowski
Benjamin Franklin
Charles Hose and William McDougall
J. Malcolm Bird
Sir Arthur Stanley Eddington
R. Austin Freeman
David Hilbert
Henri Poincaré
Bertrand Russell
George H. Napheys
H. L. Mencken
Bertha May Clark
James J. Walsh
Simon Newcomb
Sir Robert Christison
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.