This map is the culmination of fifty years of government explorations in the West. Starting with Lewis and Clark, there were numerous official and unofficial surveys and explorations, all adding to the pool of knowledge presented here. While large sections are still labeled "unexplored territory," Emory fitted these fragments together into a reasonably correct cartographic picture. This map shows large, transitional territories of Nebraska, Kansas, New Mexico, Utah, Oregon, Washington and Minnesota. One of the foundation maps of the western part of the United States.

References: Wheat (TMW) #916.

Condition: B

Good for a map of this type with generous margins. Some foxing , light toning and some creases from mis-folding.