Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
H. L. Mencken
Marion Rex Trabue and Frank Parker Stockbridge
Lewis M. Terman, Truman Lee Kelley, and G. M. Ruch
Alfred Binet and Théodore Simon
Leta Stetter Hollingworth
James Burt Miner
H. G. Wells
Raymond Franzen
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.