1 map ; 51 x 70 cm, "Soundings are in feet and tenths of a foot.", "The figures on land express the elevations above the lake surface in feet and decimals. The horizontal curves or contour lines are drawn at intervals of 5 feet of perpendicular elevation.", "Accompanying Lt. Colonel Graham's annual report (no. 200) to the Chief Top. Engineer, dated Chicago September 30th 1857.", "Map G no. 50."
Creator
Graham, J. D. (James Duncan), 1799-1865, Mayer, J. R. (John R.), United States. Army. Corps of Topographical Engineers
Temporal Coverage
1856-1857
Date Issued
1857
Rights
This map is in the public domain.
Rights Holder
Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library. https://www.lib.umich.edu/about-us/policies/copyright-policy
Graham, J. D. (James Duncan), 1799-1865, Mayer, J. R. (John R.), United States. Army. Corps of Topographical Engineers (1857). Mouth of South Black River, Michigan. . https://quod.lib.umich.edu/c/clark1ic/x-001552267/39015091897309 (map)