At the listed coordinates find the unique Johnson marker. Age in years when Richard Johnson died. = A B
Go to N 42 10.765 W 090 46.133 Age of Jennie, wife of Abram Tracy when she died. = C D
Go to N 42 10.794 W 090 46.151 What year were the Manders married? = E F G H
Cache is located at N (D-C)(B-A) E(F-G).HAC W (D-E-H)F(A-C-H) (H-E)D.(F-G)E(H+E)