Welcome, Basses! We've also recently checked on these boxes and found
South Mountain Trinity #1 and Washington Monument to be MIA.

As for the High Knob box at Gambrill State Park, it's also MIA, but
we have some inside info. A good friend is a ranger there. I ran the
letterboxing thing by him, thinking I would plant some more boxes
there. Because of the proximity of the Catoctin parks to Ft. Detrick,
the parks have been combed by the FBI in search of anthrax evidence.
He was unaware of the ADG box, but suspects any "suspicious" material
has been removed by the FBI. On the bright side, he will let me (us?)
place boxes with his approval.

Donna