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. University of Michigan Public content

Exclamation Triangle This data is hosted by Michigan, and is currently unavailable to preview and download. Stanford University does not hold this data and cannot provide access to it, at this time. If you have questions about this or other unavailable datasets from UMich Spatial and Numeric Data Library please submit your feedback to nscholtz@umich.edu.

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