Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Lewis M. Terman
Hugo Münsterberg
George Henry Lewes
George Washington Crile
Harry L. Hollingworth and Leta Stetter Hollingworth
August Büttner
Johannes Lindworsky
Robert Chenault Givler
Ewald Hecker
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.