UP 1270

UP 1270 built as Bamberger Railroad 570, an Alco RS-1; Bamberger 570 was re-engined by EMD in December 1951 using a 12-cylinder EMD 567 1000 horsepower engine and a new EMD-design long hood; Bamberger 570 was sold to UP in May 1959, along with portions of the Bamberger Railroad in the Ogden, Utah, area.

b.January 1960 -- "NEW HOME FOR THE HYBRID: Union Pacific, a railroad known for variety in motive power, has picked up an odd one: Bamberger Railroad diesel 570, now UP 1270. Bamberger (which folded last year ) got the early road-switcher from Alco-GE in 1943. Although the few units built up to that time had been partly requisitioned for wartime use in Iran, the Utah electric rated One complete with heating boiler (and a trolley pole to throw signals ) for its troop trains. The Alco's silhouette became truly unforgettable in 1951, when upgrading at La Grange gave it an EMD hood." (Trains magazine, January 1960, page 14)

c.Operated by UP on Eastern District; assigned during 1965 to Denver.d.UP 1270 has Alco order number S-1901.

http://utahrails.net/up-diesel-roster/up-diesel-roster-21.php#rs1m-1270