Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Alfred Edmund Brehm
Réginald Kann
A. A. Pulle
Justus van Maurik
A.-J. Wauters
J. Wolbers
Kurt Matull and Theo von Blankensee
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.