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