Interesting early map of the Northwest, hand colored by counties.
Idaho is now in its correct configuration, with only minor errors and no counties. Wyoming is shown in a region which will become part of Montana. Some counties appear east of the Cascade Mountains. Includes early towns, gold mines, early roads, emigrant routes, Indian Tribes, rivers, early settlements, etc.
A fine example of the map, one of the first to show Idaho properly configured and one of the earliest maps to name Montana.
Samuel Augustus Mitchell Jr. inherited the Mitchell Company from his father in 1860. For over thirty years, the company had specialized in the production of school atlases and wall maps of America. They were one of the pioneers on engraving on steel plates. In 1860, Samuel Jr. released the New General Atlas, which had been compiled in house and replaced a previous atlas by Tanner. The elder Mitchell died in 1868 and Samuel Jr. continued the business until the 1890s. At its height, the Mitchell Company employed 250 people and sold 400,000 publications annually.