This cache is located at Byers Homestead & Antique Barn. It is a Commerce Township Park that is open from dawn to dusk.
In order to find the final Letterbox, you must search the grounds for clues. (Don't worry, it's not very big)
N 42 3A.BCD W 083 29.XYZ
A = The country store is open Saturday and Sunday from 12-?
B = WRR ?367
C = Wagon Restoration by Eagle Scout Troop 10?
D = Number of Picnic Tables on the grounds
X = The ? House (Red Oval, Duck) Number Rhyme - 3
Y = GS Bells & Co, Hillsboro. O. Crystal Metal ?
Z = Number of Steps in secret staircase under pines + 1