Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Isaac Newton
Archibald Williams
John Henry Pepper
Henri Poincaré
Garrett Putman Serviss
Unknown
Fulgence Marion
William Whiston and Francis Hauksbee
Shelford Bidwell
Carleton John Lynde
J. H. Brown
Michel A. Melkanoff, David S. Saxon, John S. Nodvik, and David G. Cantor
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.