Bengal and North Western Railway, 429 then Oudh & Tirhut Railway, 429, then Indian Railways YB class #1006. Renumbered to 30084 in 1957, a 4-6-2 built by Nasmyth, Wilson in 1935 in England.
ATSF 926 and 1651 are assisting train 17, The Super Chief, west of Morley Colorado, on the east side of Raton Pass, in 1944. Otto Conrad Perry photo, from my collection.