From the source data in the photo I'd say the loco is an ex Southern Pacific GS-6. http://en.wikipedia.org/wiki/Southern_Pacific_class_GS-6
Smoke deflectors were common in the UK to lift the smoke clear of the cab. The only railway that never used them was the Great Western Railway were the excellent aerodynamic design meant that they weren't needed.
Smoke deflectors were common in the UK to lift the smoke clear of the cab. The only railway that never used them was the Great Western Railway were the excellent aerodynamic design meant that they weren't needed.