Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Isaac Newton
Henri Poincaré
Marie Curie
D'Arcy Wentworth Thompson
Mary Somerville
Edmund Callis Berkeley
Charles Frederick Kroeh
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Albert Einstein
J. Malcolm Bird
David Hilbert
Maria Mitchell
James J. Walsh and Brother Potamian
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James Clerk Maxwell
J. A. Zahm
John Phin
Mary Wollstonecraft Shelley and James Montgomery
Lawrence Weaver
George Biddell Airy
Alex. McAulay
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.