Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Percival Lowell
James Croll
John Gerard
Thomas Henry Huxley
C. Lloyd Morgan
Eliza Burt Gamble
Hiram Miner Stanley
Walter Shaw Sparrow
Josephine Daskam Bacon
Durant Drake
George McCready Price
Douglas Dewar and Frank Finn
Francis A. Collins
Geo. W. Warder
James Freeman Clarke
Samuel Butler
Charles Benedict Davenport
Sir E. Ray Lankester
kniaz Petr Alekseevich Kropotkin
James A. S. Watson
William A. Williams
Charles Darwin
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.