Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
William Desborough Cooley
Barthold Georg Niebuhr
Into Konrad Inha
James MacQueen
Henry W. Shoemaker and George Patterson Donehoo
Sven Anders Hedin
Willis E. Johnson
Various
Royal Geographical Society
Klas Corander
Friedrich Gerstäcker
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.
