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1. St. Joseph harbor, Michigan from survey made between the 14th & 27th 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:
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 the Chief Topographical Engineer, dated Chicago, November 15th 1857."; "Map G. No. 47."; 1 map 66 x 96 c
Data Provider:
University of Michigan. Libraries
Collection:
UM Clark Library Maps