This map accompanied an important report intended to awaken public interest in the American occupation of Oregon Territory in the controversy with Great Britain, who also claimed the territory down to the Columbia River. Among the many interesting details are the locations of the various trading posts or forts connected with the American and British northwestern fur trade. The map covers present day Oregon, Washington, Idaho, Montana, and Wyoming. The region west of the Rocky Mountains is named Mandan District. It also shows much of southwestern Canada. A lovely example of this historical and desirable map.

References: Claussen & Friis #221; Hayes #197; Wheat (TMW) #434.

Condition: A

Folding, as issued on thick paper. Just a hint of offsetting in a couple of blank areas, else fine.