The post cords are random, don't go there!
My Dad was a Letter Carrier for over 30 years. After he retired he visted many locations visiting family.
He also enjoyed Geocahing with me on on Fridays, asking me " Are we looking for treasure today?"
Match zip codes to location then only use last 3 digits of required zipcodes doing the math to get ABC and EFG.
04072 89940 02201 98103 96815 20004 66952 04064 32830 89940 95814
California State Railroad museum CA minus Boston City Hall ,MA Then add 126 = ABC
Diamond Head,Honolulu, HI minus GeocachingHQ,then Minus 99 = EFG
N 43 04. ABC W 071 44.EFG
Permission was given to place cache in Buxton Forest in Mt. Wallington, in Weare, NH.
Parking near my other cache GCB7D0Y Lady Cow. Enjoy the trail here.