Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Richard Henry Dana
George L. Canfield, George W. Dalzell, and J. Y. Brinton
H. Byerley Thomson
Paul Stiel
Sociedade de Geografia de Lisboa
Pierre Garcie and Olivier Maillard
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.