| Union Pacific 4-6-6-4 class CSA-1 number 3911 was built by Alco-Schenectady in September 1936 (c/n 68756) as a coal burner, converted by the UP to burn oil around April 1944 and renumbered to 3811, converted back to burn coal in 1949 and renumbered to 3711, converted back to burn oil in 1950 and renumbered back to 3811, retired in September 1956. |