Black River & Western 60; New Hope & Ivyland 40.
The real life instances of these two locomotives live just 13 miles apart, but probably have never been together because they are separated by the Delaware River.
40, a Baldwin 2-8-0, runs out of New Hope, Pennsylvania. 60, an Alco 2-8-0, runs out of Ringoes, NJ, which is just across the river and up the road.
Now, with these recent representations from Lionel, they can be paired up in 3 rail O scale