Union Pacific 4013
Additional Details:
| A drag freight of 123 cars in powered by one of the world's largest steam locomotives. Big Boy 4013, a 4-8-8-4 articulated stem locomotive, passes the signals at Speer, Wyo., October 7, 1958. No. 4013 was built in 1941 by the American Locomotive co. in Schenectady, n. Y. |
