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1. Grand River Harbor, including part of the town of Grand Haven, Michigan from survey made in October 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:
The soundings are in feet & 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 J.D. Graham's annual report (no. 161) to Chief Top. Engineer, dated Chicago, November 15th 1856."; "Map G. No. 40."; 1 map 54 x 99 c
Data Provider:
University of Michigan. Libraries
Collection:
UM Clark Library Maps