Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
William James
Michael Faraday
Edward B. Tylor
Thomas Commerford Martin
George Francis Dow and John Henry Edmonds
David Livingstone
Lewis M. Terman
Charles Darwin
P. H. Ditchfield
John Venn
Lewis Henry Morgan
Robert Ezra Park, E. W. Burgess, and Roderick Duncan McKenzie
Muḥammad Shafīq Ghurbāl
Brendan P. Kehoe
Zelia Nuttall
Francis Galton
Santiago Ramón y Cajal
Charles Seignobos and Charles Victor Langlois
Walter B. Cannon
Hereward Carrington
William Stanley Jevons
United States. Agricultural Research Service. Consumer and Food Economics Research Division
United States. Bureau of the Census
Sir Clements R. Markham
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.