Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Sir Thomas Little Heath
Gertrude Lowthian Bell
George Nichols Packer
Emil Weyr
Max Simon
Friedrich Dannemann
Jacomy-Régnier
Archimedes
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.