This collection includes all trains that were introduced in era IV for service with American operators.
Era IV is marked by the completion of modernizing rolling stock, which was started in era III.

If you are looking to play in a specific era, I recommend you to also use some trains from the era before as well, as some may have been still in service.

Check out my collections for American trains from other eras:


Check out my collections for trains in other countries from this era: