Marcy, Yes, TH was one of the stations in New Jersey, probably the most "famous." It was run by Carl Lundgren, W2AZQ, and was located in Colts Neck. From my QTH in Massachusetts, it was a fairly easy shot. TH was on 189.36 kHz, very close in frequency to the former Iceland station on 189 kHz, so at night, the broadcast sidebands were quite prominent when listening for TH. I have 3 QSL cards from Carl, from 2000, 2001 and 2006.
I'm not sure of the date, but a recording of his CW can be found at:
http://www.w1tag.com/files/TH0227.mp3
The text being sent was "VVV DE TH TH TH 60 WOODROW ROAD COLTS NECK NJ 07722"
Carl later moved to North Carolina, and had a beacon on from there for a while.
Good memories...
John, W1TAG