There is no cache at the posted coordinates, nor is there anything that will help solve the puzzle.
The posted coordinates were once the location of a public library.
That building, and the hill it perched upon, are long gone.
To locate the Little Free Library containing the cache:
Add the year the library opened, minus 1361, to the posted north coordinate.
Subtract the year the library closed, minus 1823, from the posted west coordinate.