Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Théophile Moreux
Michel A. Melkanoff, David S. Saxon, John S. Nodvik, and David G. Cantor
Hermann Sieveking
Henri Poincaré
H. Bryon Heywood and Maurice Fréchet
R. Clausius
V. V. Veresaev
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.
