of commercial use of the powerof the Falls, westward through De-troit, and by boat to Chicago. It wason the portion of the homeward pas-sage by boat that an incident occurredthat set Lincolns inventive mind toworking on the creation of a device tobe used in connection with river pas-sage. The boat… … MEMORIAL MARKER Photo by Author craft. We are told of Lincolns deepinterest in the proceedings and that hemade several suggestions to the officersdirecting operations which were ac-cepted by them. Mr. Lincoln, immedi-ately upon his return to Springfieldfrom this trip made contact with oneWalter…
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