Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Charles Kingsley
Edward Bindon Marten
Marie Curie
Ernest Lebon
Sir Henry H. Cunynghame
Isaac W. Heysinger
comte Th. Du Moncel
William Whewell
Various
William George Hooper
William A. Locy
Oxford graduate
Robert S. Ball
Henry Dircks
Hudson Tuttle
H. B. Marriott Watson
James Croll
Willis T. Lee
Marie E. Zakrzewska
George Manville Fenn
Chautauqua Institution and Chautauqua Literary and Scientific Circle
Edwin E. Slosson
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.