Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway. Steam locomotives of the Chicago & North Western Railway.