NRL: After talking with some of the Phelps County Historical Society folks, I'm going to archive this cache, and place a new cache nearby (if I can get around to it) that does not require you to enter the building, but still lends you the chance if it's unlocked.
The current board of directors was unaware of any permission give to host the cache in the building, which is not surprising seeing as it is 10 years old. Hopefully I can put together another nice multi nearby.
I have obtained permission to place a new cache nearby from the Historical Society and will try to put together some sort of history lesson/multi.
Thanks for all who visited!
(8/24/2018) Uploading photos for another cache to get them in the system so they can be linked.