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 c
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