Relief shown by hachures and spot heights. "12"--Lower right. Though likely produced in 1873, county boundaries shown date from some time in the 1860s. Likely from: The people's pictorial atlas / Jones and Hamilton, 1873.
Prime meridians: Washington, D.C. & Greenwich.Below lower left margin: Entered according to Act of Congress in the year 1849 by W. Williams in the Clerks Office of the District Court of the Eastern District of Pennsylvania.Removed from: Williams, Wellington. Appleton's southern and western travellers' guide. New York: D. Appleton & Co., 1850.
University of Minnesota Libraries, John R. Borchert Map Library.