Cite

Citation Info Gamble, William. Graham, J. D. (James Duncan), 1799-1865. United States. Army. Corps of Topographical Engineers. (1856). Entrance to Chicago harbor showing the state of the bar April 4th, 1854 before the dredging of the direct ship channel was commenced.. [JPEG]. Retrieved from https://geo.nyu.edu/catalog/54d83a56-4c40-411e-bf44-fd84781223f0

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