Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
W. H. McCormick
C. V. L. Charlier
Jay Franklin
Robert P. Multhauf and Victor F. Lenzen
Roscoe Wilfred Thatcher
John Ayrton Paris
F. H. Leeds and W. J. Atkinson Butterfield
H. Hesketh-Prichard
C. F. Cross and E. J. Bevan
Frederick Charles Lincoln and Steven R. Peterson
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Thomas Henry Huxley
Fredric Brown
William Bateson and Gregor Mendel
Various
Stella Benson
Richard A. Proctor
St. George Jackson Mivart
James Clerk Maxwell
Alfred Edmund Brehm
Charles Darwin
Anonymous
T. E. Thorpe
Mrs. Lang
Melvin M. Knight, Iva Lowther Peters, and Phyllis Blanchard
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.