General Land Office: Sketch of the Public Surveys in Michigan. Department of the Interior, General Land Office, October 2nd 1866. Jo. S. Wilson, Commissioner. Bowen & Co. lith. Philadelphia. (with) inset map of Isle Royale. (Height 56 cm. width 56 cm., Scale 1 : 1,140,480.
The map is folded as issued. The paper is bright and clean, very minor tear at outer edge, well outside map border. In very good condition.
This map is considered one the most accurate and detailed early maps of Michigan. The map is in partial color with counties colored at the borders. The map provides a clear depiction of the towns, mining areas, wagon roads, railroads including land grant railroads and other prominent features. The copper, iron and silver mines are denoted in color. General Land Office maps are an essential historical tool for the early mapping of many states in the U.S., especially those west of the Mississippi.