Burlington Northern diesel locomotive 6217 at Golden, Colorado on November 28, 1981. Number 6217 is an SD9 built by Electro-Motive Division (GM), builder's number 22405. The locomotive is sub-lettered for the C&S ( for Colorado & Southern).

Burlington Northern diesel locomotive 6234 at Golden, Colorado on February 24, 1981. Number 6234 is an SD9 built by Electro-Motive Division (GM), builder's number 25159. The locomotive is sub-lettered for the C&S ( for Colorado & Southern). Photo by Al Christianson.

Burlington Northern Class SD9 Number 6234 with freight cars at Golden, Colorado on August 25, 1981. Photo by Al Christianson. Number 6234 was built by Electro-Motive Division in April, 1959 as Colorado and Southern Railway Number 839, Builder Number 25159.