Lonely Town Hall Multi-cache
GeoCrater: I am regretfully archiving this cache since there's been no response from nor action by the cache owner within the time frame requested in the last reviewer note.
GeoCrater
Geocaching.com Community Volunteer Reviewer
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Difficulty:
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Terrain:
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Size: 
(regular)
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This cache is a very easy mutli-stage as long as you can do some simple math to get the final coords. Very interesting location and information.
The location is the last standing building of a small township that linked several other towns and this building served as a town hall for that area. Over the many years it has been used for many different purposes, including housing for highway builders and an indoor basketball court. Take a look around, maybe even bring a picnic on a nice day.
Here's what you need to do to find the final location.
Find a set of Values from the informational Plaque.
For the northern part:
A= The year the second floor was removed.
B= After what year did the population dwindle. Let that year be the Value
So : N47. (A-1900) . ((B-1900) - (A-1900) * 50) + 7
For the western:
C= The Elarged Homestead Act of this year
So: W112.(C-1900)+7.((A-1900)+(B-1900)+(C-1900) X 14) + 33
It looks tougher than it is. The final cache is a Green ammo can, not far off from the orgininal location. So bring some scratch paper, a pencil and your maybe your teenager if you don't remember bracket math and enjoy the quaint area.
Additional Hints
(Decrypt)
Nyy gur vasb lbh jvyy arrq vf ba na vasbezngvbany cyndhr va sebag bs gur fgehpgher.