I have always thought the Chesterfield Club was a separate location, but it might be because Chesterfield Township is around 23 Mile Road (but that doesn't necessarily mean the Club was in the Township) and the Gratiot address is between 9 & 10 Mile (that location is currently an Olive Garden restaurant and does not occupy an old building). Maybe someone else with Detroit connections can pinpoint the location of the Chesterfield Club, though.