B&O / Baltimore and Ohio Railroad
Operated in 1830−1987. HQ in Baltimore.
B&O GP40 4030
1
B&O GP30 6904
B&O GP35 3699
2 1
B&O GP40-2 4203
8
B&O GP40-2 4298
6
B&O GP40-2 4194
5
B&O GP40 4153
5 
B&O NW2 9537
4
B&O S4 9121
2 2
B&O GP9 3414
2