From: https://commons.wikimedia.org/wiki/File:1833_Chicago_map_by_Conley_%26_Ste... Uploaded by Scewing. Last modified about 8 years ago. Unrectified.
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File:1833 Chicago map by Conley & Stelzer.jpg
From: https://commons.wikimedia.org/wiki/File:1833_Chicago_map_by_Conley_%26_Ste... Uploaded by Scewing. Last modified about 8 years ago. Unrectified. Links: Wikimedia Commons
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