The DRGW leased the DM&IR Yellowstones during the winter months of WWII to help with the overwhelming war traffic. The DM&IR Yellowstones ave been screaming to get done in diecast/plastic. While I love big steam and all, I don't like the EM-1 and was thinking the DM&IR Yellowstones would have proved to be more marketable on B-mann's end, I don't understand how when people are constantly asking for the DM&IR engines when you put out an engine that I never really hear HO scale steam fanatics really talk about the EM-1 as much as they do the DM&IR M-3 and M-4 but that just might be me.