Within 25 miles of where I live now, outside of Rochester NY, there were:
Erie
B&O
Pennsy
New York Central
Lehigh Valley
Most of these I think got folded into the mergers. Today there's just CSX (with all sorts of rail maintenance problems) and a shortline that delivers corn syrup and grain to food producers.
I wish I could go back to the heyday of big steam in the 1930s or 40s.
The New York Central is still around.


-Smoke