Hey guys! I m working on filling gaps in my locomotive roster spreadsheets and I have 3 Locomotives from the Illinois Central that I can't seem to find much of any information on. I'm hoping that somebody on here can come through here! It doesn't help that I don't even know the wheel arrangements of these locomotives, other than the fact that they all have only 2 drivers. Tredegar Iron Works ?-2-? "Dart" Seth Wilmarth ?-2-? "Union" Seth Wilmarth ?-2-? "Betsy" I am looking for the driver diameter, the tractive effort, and the build date.