Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Sigmund Freud
Franz Boas
William McDougall
Wilhelm Max Wundt
Edwin Sidney Hartland
Gustave Le Bon
Daniel G. Brinton
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.