Discovery of the Great West by Francis Parkman, Jr.

Part three of the series of historical narratives England and France in North America. According to Wikipedia: Francis Parkman (September 16, 1823 - November 8, 1893) was an American historian, best known as author of The Oregon Trail: Sketches of Prairie and Rocky-Mountain Life and his monumental seven volume France and England in North America. These works are still valued as history and especially as literature, although the biases of his work have met with criticism.