Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Silvanus P. Thompson
Ludwig Wittgenstein
Edwin Abbott Abbott
Henry Ernest Dudeney
G. H. Hardy
John Casey and Euclid
Isaac Newton
Henri Poincaré
Florence Nightingale
Marie Curie
Nellie Bly
D'Arcy Wentworth Thompson
Bertrand Russell
George Boole
Charles Babbage
Sergei Aleksandrovich Rachinskii
David Eugene Smith and Louis Charles Karpinski
Bertrand Russell and Alfred North Whitehead
marquis de Pierre Simon Laplace
Petrus Ramus
David Hilbert
P. H. Ditchfield
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.
