Chicago harbor & bar, Illinois from survey made between March 29th & April 9th 1856 under the direction of Brevet Lieut. Col. J.D. Graham, Major U.S. Top. Engineers. Superintending Engineer of Lake Michigan Works.
The soundings are in feet & tenths of a foot. Includes sailings directions and description of the buildings at old Fort Dearborn. "Map G. No. 38." 1 map; 58 x 77 cm 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.
Graham, J. D. (James Duncan), 1799-1865.,United States. Army. Corps of Topographical Engineers.