Fifty Animals That Changed the Course of History

Fifty Machines that Changed the Course of History (Fifty Things That Changed the Course of History)

Fifty Minerals that Changed the Course of History (Fifty Things That Changed the Course of History)

Fifty Plants That Changed the Course of History

Fifty Weapons That Changed the Course of History (Fifty Things That Changed the Course of History)

Fifty Foods That Changed the Course of History (Fifty Things That Changed the Course of History)

Fifty Ships That Changed the Course of History: A Nautical History of the World (Fifty Things That Changed the Course of History)

Fifty Railroads that Changed the Course of History (Fifty Things That Changed the Course of History)

The History of Music in Fifty Instruments

Wicked Plants: The Weed That Killed Lincoln's Mother and Other Botanical Atrocities