Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Gasparo Scaruffi, active 1613 Antonio Serra, and Geminiano Montanari
Emanuele Rossi
Giuseppe Mazzini
Georg August Schweinfurth
Giulia Lazzari-Turco
Carlo Alberto Gonin
Carlo Besana
Various
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.