Chart of Chicago harbor Illinois: shewing the main entrance for ships, and the state of the bar after completing the dredging between the 18th of May, and the 22nd of July 1854

Graham, J. D. (James Duncan), 1799-1865 | United States Army. Corps of Topographical Engineeers.

Lith. of Ed. Mendel, Chicago, [1856?]

"The soundings are in feet & tenths of a foot." "Accompanying Lt. Col. J.D. Graham's report (no. 32) to the Chief Topographical Engineer, dated Chicago, August 19th 1854. Also referred to in report (no. 34) from same to same, dated Chicago, Septem. 4th 1854. Also referred to in the Annual Report (no. 116) from same to same, dated Chicago December 31. 1855." "Map G. No. 12."

674: [1854]: Un38chr Large

1 map ; 61 x 79 cm

Chart of Buffalo Harbor and head of Niagara River: with the outlet of Lake Erie

U.S. Lake Survey | Williams, W. G. (William G.), -1846 | Woodruff, I. C. | Dougal, William H., 1822-1895 | Meade, George Gordon, 1815-1872 | United States Topographical Bureau.

Depths shown by gradient tints and soundings. Includes "Sailing directions." At head of title: seal with text "Survey of the lakes 1857."

647.919:1857 UN38cbh (large maps)

1 map ; 54 x 48 cm, on sheet 66 x 60 cm