Of the caches I found, one was the physical cache for "A Protracted Puzzle". I did the puzzle part of it at home on a previous rainy day. It is pretty straightforward if you do the geometry work with reasonable accuracy.
Waterfall Madness (Pennsylvania)
Good All Gone (Pennsylvania)
Camo is Good for Hiding (Pennsylvania)
Surroundin9 the Castle - Surrender is NOT a Option (Pennsylvania)
Surroundin9 the Castle - The Kin9 is Near (Pennsylvania)
Surroundin9 the Castle - Invading the Kin9dom (Pennsylvania)
Stop Opposing the Kin9 (Pennsylvania)
Whitford Lodge/Hall - Colonial Cache #4 (Pennsylvania)
1750 Zook House-Colonial Cache #2 (Pennsylvania)
White Horse Tavern - Colonial Cache #3 (Pennsylvania)
Who Ate Miss Piggy? (Pennsylvania)
I See a Bridge! Seed Cache (Pennsylvania)
A Protracted Puzzle (Pennsylvania)
Bowl Me Over (Pennsylvania)
Rapp's Damned Bridge (Pennsylvania)
Sheeder Mill Bridge II (Pennsylvania)
CR in Birchrunville (Pennsylvania)