SKYWALKER, TRAIN - STEAM WHISTLE WITH CHUGGING

This is a Skywalker Sound sound effect. The only information about this sound effect is that the whistle heard is a Hancock 3 chime steam whistle. However, it is possible that it could be from Frisco #1522's Hancock 3 chime whistle. But that engine had a CB&Q 5 chime whistle at the time from 1995-1999 so it's very unlikely that it is the one responsible.