Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
John Charles Frémont
Mary Somerville
Alexander von Humboldt
George P. Marsh
Carl Ritter
C. Semper
Lady Anne Blunt
John Timbs
Sir John Lubbock
James Geikie
William Herbert Hobbs
Isaiah Bowman
Ellsworth Huntington
Hallam Hawksworth
John Ball
Adeline Knapp
Willis T. Lee
Harold W. Fairbanks
Archibald Geikie
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.