Well if I'm using the database correctly between 1926 and 1928 the only boats it could be are a NY30 or a FI31 - since all but one of the NY30's are known (I don't think any are in the mid west), and several of the FI are missing in this time period, I'd guess a FI31. Could be one of the Unknowns....
Anyway Hometown could supply a hull #?