Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
John Muir
Boone and Crockett Club
628 downloads
Henry S. Fitch and Ronald L. McGregor
Various
United States. Forest Service. Rocky Mountain Region
Harold J. Brodrick
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.