If you actually paid attention to the B&O Railroad Museum and B&O history, you'd find that, at various times, the B&O controlled (financially and corporately) the WM and CNJ, and that the C&O actually corporately owned the B&O long before the Chessie system merger. So C&O, WM, and CNJ (and even, for a while, Chicago South Shore & South Bend) equipment is ALL part of the "B&O story" and pertinent to the Museum's stated mission.