| Notes |
Charles Hackett, Joseph L.Wamhoff, Charles L.Altvater, Frank Blazek, Milton E.Siefert, E.H.Hansen, "Thomas Jefferson" (by Winans and Gillingham in 1838), model of "Tom Thumb" by Peter Cooper in 1829, Ross Winans "Camel"-type engine 1848, William Mason B. & O. Railroad No. 25 1856, J.C.Davis B. & O. Railroad No. 600 1875, Phillips E.Thomas No. 5501 (designed by Geo. H.Emerson 1925), No. 5230 B. & O. Railroad Class P6, No. 4400 B. & O. Railroad Class Q.4, No. 6200 B. & O. Railroad Class S1A Santa Fe type, No. 7147 B. & O. Railroad Class EL5A four-cylinder "Mallet" simple |