Here is the final resting place of Miss Jane Littlejohn, an early resident of Beaver Hill Cemetery. Her parents and several of her 11 siblings also rest nearby. Only four of the twelve Littlejohn children lived past the age of 20. Four died before their first birthdays. Sweet Jane before you was only 16 when she joined her several brothers and sisters in heaven.
To find the final cache, identify the year of Jane's death. These numerals become ABCD. Use substraction and addition to calculate the coordinates for the final cache:
N 36 (C-B-A-D) (B-A-D-A). (C-B-D-A) D (B-D-A)
W 76 (C-B+A) (B-D). (C-D) (B-A) D