I'm interested in knowing about railroads, particularly those in the Northeast, that ran, or currently run, train cars (passenger and/or freight) of different railroads.
For instance, did the NY Central ever run train cars from the New Haven or the PRR?
Or, did the Delaware & Hudson ever run train cars from the PRR?
Or, did the Baltimore & Ohio ever run train cars from the PRR?
Or, did the Jersey Central ever run train cars from the NY Central or PRR?
Or, did the New Haven ever run train cars from the Boston and Maine?
Or, did the Boston & Albany ever run train cars from the NY Central?
Or, does the CSX ever run train cars from the Norfolk & Southern or the Union Pacific?
I could go on and on, the possible combinations seem endless.
Why do I want to know if real railroads did this? If they did, then we could do it on our model railroads knowing that it would be prototypically accurate.
I don't know the answers, but I believe this mixing of train cars was more common in freight trains than in passenger trains, but I could be wrong. Arnold