Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Robert J. Nemiroff and Jerry T. Bonnell
Archimedes
Sir Horace Lamb
Charles E. Fritch
David Eugene Smith
F. G. Normann
Louis Couturat
Euclid, Raymond Clare Archibald, Franz Woepcke, and Leonardo Fibonacci
Arthur Latham Baker
R. D. Carmichael
Alexander Macfarlane
Felix Klein
William Frank White
Paul Carus
William Elwood Byerly
G. H. Hardy
Hermann Schubert
J. J. Thomson
Willis E. Johnson
Lewis Carroll
Norman L. De Forest
Henry B. Fine
Ernest Rutherford and Harriet Brooks
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.