Chicago harbor & bar, Illinois from survey made in April 1857 under the direction of Brevet Lieut. Col. J.D. Graham, Major U.S. Top. Engineers. Superintending Engineer of Lake Harbor Works.

Notes:
The soundings are in feet & tenths of a foot."; "Accompanying Lt. Colonel J.D. Graham's annual report (no. 200) to Chief Top. Engineer, dated September 20th 1857."; Includes text (4 notes) and "Note 5" pasted on.; "Map G. No. 52."; Portions near left and right margins missing from MiU copy.; 1 map 80 x 125 c
Data Provider:
University of Michigan. Libraries
Collection:
UM Clark Library Maps
Subject Topic:
Harbors Illinois Chicago Maps.; Chicago River (Ill.) Maps.
Language:
eng
Rights:
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. and https://www.lib.umich.edu/about-us/policies/copyright-policy
URL:
http://name.umdl.umich.edu/IC-CLARK1IC-X-001291870%5D39015091899396_02