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It is 347 miles according to Google Maps.
The address of the Crystal Falls Museum Society is: Po65, Crystal Falls, MI 49920
The entire city of Chicago falls within the boundaries of Cook County, Illinois.
The Crystal Falls District Community Library is located at 237 Superior Avenue in Crystal Falls, Michigan.
The address of the Harbour House Museum is: 17 N 4Th St, Crystal Falls, MI 49920
The web address of the Harbour House Museum is: http://www.harbourhousemuseum.org
The phone number of the Harbour House Museum is: 906-875-4341.
The phone number of the Crystal Falls District Community Library is: 906-875-3344.
Of the cities listed in the question, Pittsburgh is in the southwest corner of Pennsylvania, which is not near the Great Lakes. Salt Lake City, Utah is in the southwest US. Great Falls, Montana is in the northwest USA. That leaves Chicago Illinois as being found on the Great Lakes.
Chicago, DeKalb, Dixon, and Rock Falls are all quite near the latitude of Rome.
Rock Falls, Illinois is located in the Central Time Zone.
Atlanta, GA (ATL) to Sioux Falls, SD (FSD) Shortest Flight Duration 2 hours 40 mins