To get final coordinates, you must first complete the 60s Adventure Lab series. Upon completion you will be given the coordinates of the location at which you can gain the information needed to calculate the final coordinates for this cache.
Find my friend, Jim Feeney
DOB = A/BC/DEFG
DOD = H/I/JKLM
Find the cache at N42 44.CLF W84 33.MBF
Use Certitudes to both confirm your calculations and to gain additional hints on the final location. Due to government buildings in this area, security is high. The additional hints will allow you to quickly find, retrieve, sign, and return the cache.
You can validate your puzzle solution with certitude.
This cache was placed by a proud Lake Superior member of MiGO.