Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Mary Wollstonecraft Shelley and James Montgomery
Thomas Henry Huxley
René Descartes
Richard Jefferies
Sarah Knowles Bolton
H. G. Wells
Robert P. Multhauf and Victor F. Lenzen
François Rabelais
Jay Franklin
Roscoe Wilfred Thatcher
Albert C. L. G. Günther
S. P. Langley
Howard Pyle and Katharine Pyle
Leslie Vickers
E. D. Hardy and American Society of Civil Engineers
James Clerk Maxwell
Various
James Cutbush
Mary L. Read
Alan Edward Nourse
U. P. Hedrick
Richard A. Proctor
R. Cadwallader Smith
H. Hesketh-Prichard
F. H. Leeds and W. J. Atkinson Butterfield
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.