Some of you had trouble finding Tracy's letterbox in this area; hopefully you will have more success with this multi.
At the posted coordinates, you will find a plaque commemorating an old homestead. Use the digits of the birth year of the person being remembered on the plaque as ABCD and the digits of the year of their death as EFGH.
The cache can be found at N 43 5 [D+E] . [C-A] [B-G] [D+H] W 78 4 [F-A] . [D+G] [C-H] [(E+F+G+H) - (A+B+C+D)]
Watch your step at the final!
Congratulations to CarolynCL for the FTF!