Probably the saddest thing I watched while living in Cresson was the demolition of MO tower on Dec 7th, 1998. Several good efforts were put forth to save it, but it was just too far gone to move. Very few people were there other than the demo team to record this event, but a local innkeeper spotted the old blocking device board and managed to have the crew pick it out and save it. I believe the train board went to the Railroaders Museum in Altoona earlier. Very few PRR towers remained around Conrail by this date, so it was indeed sad to lose historic MO.
This is Nero Tower on Conrail's Chicago Line (former NYC; LS&MS). Pine Junction on the B&O is behind the tower, while the EJ&E Gary - Griffith mains cross overhead on the bridge. Photo taken in November 1979, Doug Davidson photo with permission
Pence tower in Momence, IL that guarded the diamond of the ex NYC Kankakee Secondary with the ex C&EI UP Villa Grove Sub on July 6, 1991. This tower was torn down in 1997. Photographer unknown, Chris Howe collection
Westbound Trailvan "on the circuit" of the interlocking at the DT&I crossing, Lima, Ohio. Back when the Fort Wayne was big-time railroading, running trains by current-of-traffic, rule 251, interlocking and block station control. photograph collection of Eric Kretz.