Mouth of South Black River, Michigan from survey made in August 1856 by assistant John R. Mayer, under the direction of Brevet Lieut. Col. J.D. Graham, Major, U.S. Top. Engineers. Superintending Engineer of Lake Michigan Works.

Notes:

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."; 1 map 51 x 70 c

Data Provider:

University of Michigan. Libraries

Collection:

UM Clark Library Maps

Subject Topic:

Harbors Michigan South Haven Maps.; Black River (Mich.) Maps.

Language:

eng

Rights:

This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library. and https://www.lib.umich.edu/about-us/policies/copyright-policy

URL:

http://name.umdl.umich.edu/IC-CLARK1IC-X-001552267%5D39015091897309