—”Nutwood, IL”
A rural town in southwestern Illinois.
Nutwood is an unincorporated community in Jersey County, Illinois, United States. It is located along Illinois Route 100, about four miles west-southwest of Fieldon. Wikipedia
The website, riverbender.com is the only news outlet that I can find with anything about the sub.
This link is to an article about another submarine found in an Illinois river (in 1915):
https://www.historynaked.com/fool-killer-submarine-chicago-river/
"The “Foolkiller” was so called because it first made its appearance shortly after the Chicago fire, in the days when submarines were unheard of"
An article today - April Fool's Day - about a submarine found in an Illinois river, which happens to sound similar to another submarine - named Foolkiller - found in an Illinois river.