Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
George Husmann
George E. Woodward and F. W. Woodward
U. P. Hedrick
Gustavus A. Eisen
L. H. Bailey
Various
Johann Gottfried Bornemann
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.