Hi Bob,
I currently reside in Mechanicsburg near the turnpike/ US 15, but work in Mt Holly Springs. During the workday sometimes as many as 8-10 trains go through. I've seen the PRR and the LV heritage units in the last few weeks.
I've enjoyed your posts of photos of the Cumberland Valley from the pre-Conrail days. I'm not from here originally, but it's been fun learning the history.
Ron