In order to find this cache, you must first complete the nearby "Beverly" Adventure Lab caches. As you work your way through these caches, you will get information that will unlock the final coordinates. Note: if you completed the Salem Adventure Lab Caches, and forgot to record the codes, they can still be viewed in the journal.
How do you find Adventure Lab Caches? Download the "Adventure Lab" app on your phone and then click here to load the Labs associated with this bonus cache.
The final can be found at:
N 42 33.ABC W 70 51.DEF
If the parking lot is full, you can find parking on a nearby side street.
Congratulations to jewelsverne on the FTF!