The cache may be found at N42 AB.CDE, W71 FG. HJK, with the numbers found as follows:
AB: How many evergreens are on the common?
C: On the mural on Chauncy St., how many letters are in the large word painted on the wall?
D: Again on the mural, how many barrels are being rolled in the section near the painting of the train?
E: At the memorial boulder, how many columns of names are on the plaque?
FG: At the gazebo, add one to the number of vertical beams supporting the roof.
H: On top of the station house, how many clocks are there?
J: Again at the station house, find the green parking information signs. Add the first and third digits of the parking zone number. NOTE: the sign appears to have been changed. J=5
K: Near the boulder you'll find a green and white sign. Add the first two digits you see on that sign.