The first (and ultimately the overall first articulated steam locomotives) in the United States were 0-6-6-0 switchers for ... locomotives - three Erie 2-8-8-8-2s and one Virginian 2-8-8-8-4 ...

For end-cab switchers, the MR&T locomotive fleet ... and 2-8-0 Consolidations, and possibly 2-8-2 Mikados. The Mikes would probably be the biggest steam the MR&T would have rostered.