"In 1870 a route was surveyed from the Boston and Albany Railroad at South Spencer to the center of the village. The issue was brought to a town meeting in 1872 where the idea was voted "to pass over the article." Various other surveys were now made covering this and many other routes. It wasn't brought up again until April 7, 1877, where the article was passed over once again. After several other meetings on the same subject, the town finally, on April 3, 1878, voted to spend approximately $25,000 on building the railroad. In 1878, a 2 1/4 mile railroad was built, connecting Spencer Center with the Boston-Albany Railroad at Spencer Depot NE with the station being at South Spencer. After it was decommissioned and removed, it was tuned into Depot Trail. It now connects Chestnut Street and S. Spencer Road."
Upon a recent visit I noticed this new plaque that had been added. Being fascinated with the addition of some local history, I decided to add a new cache on this trail. In order to find this cache, you will have to answer a few questions followed by some simple math.
N 42 13.ABC W 072 00.DEF
How many children did Esther Howe have? _ - 7 = A
What year did William Howe patient his wooden truss bridge? _ / 20 - 86 = B
What year did William Howe extend his patient? _ / 370 = C
How old was J. Chauncey Lyford when he died? _ - 20 = D
How many species did Lyford create taxidermy displays of? _ / 20 = E
What is the total number of pictures of cyanotypes the American Antiquarian Society has? ( _ + 49 ) ÷ 75 = F
Cache is a bison tube hanging close to the trail. Should be an easy find once you find all the info you need.
You can validate your puzzle solution with certitude.