An uncommon map that details the countries, mountains and river systems. In the United States, a pre-Gadsden Purchase border with Mexico is shown and the Great Basin is named. Canada is British America and Alaska is Russian America. The map was first engraved in 1841, here with additions to approximately 1850. A boldly engraved and handsome sheet published at 81 Fleet Street, London.
Attractive original color with light toning along the centerfold, a few faint spots in the image, and two small chips confined to the blank margins.