Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Mme. Campan
George M. Gould and Walter L. Pyle
August Weismann
Charles Benedict Davenport
Isaac Asimov and Theodosius Dobzhansky
Melvin M. Knight, Iva Lowther Peters, and Phyllis Blanchard
Edward J. Van Liere
William Bateson
Michael F. Guyer
Oscar Hertwig
Thomas Hunt Morgan
Samuel Leopold Schenk
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.