Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Newton H. Chittenden
United States. Department of the Interior
Edwin C. Alberts
United States. National Park Service
Stephen Smith
Terry A. Vaughan
Theobald Smith
René Martin
Theodore J. Walker
Kaye M. Shedlock and L. C. Pakiser
G. Flemwell
G. Frederick Schwarz
Charles L. Douglas
William Austin Cannon
Illinois. Department of Conservation
Benson Baker
George W. Bain and Howard A. Meyerhoff
F. E. L. Beal
J. E. Wallace Wallin
Henry W. Shoemaker
A. J. Sargent
Graham Lusk
George Vivian Poore
Sir Peter Eade
Robert W. Bruère
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.