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. The large western territories include New Mexico, Utah, Oregon, Washington and Nebraska.

References: Wheat (TMW) #916.

Condition: B

Good impression and full margins. Issued folding, now backed with archival tissue. A little toning along some folds, binding tear and fold intersections repaired.