Northern Pacific 5001, a class Z-5; Northern Pacific 1795 and 1770, both class W-3, wait at the shops in Livingston, Montana, for their next assignments, on June 07, 1955. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, stored locomotive.

Northern Pacific steam locomotive 5001 in front of the passenger depot while in helper service at Livingston, Montana circa 1952. Number 5001 is a class Z-5 built by Baldwin in 1930. Photo by Ron V. Nixon, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 4502 at Livingston, Montana, on August 23, 1943. Number 4502 is a class Z-4 built by Alco-Richmond in 1923. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 4001 at Livingston, Montana, on August 22, 1943. Number 4001 is a class Z-2 built by Baldwin in 1910. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 2688 with its insulation and metal covering removed for inspection at Livingston, Montana, in September 1952. Number 2688 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2683 at Livingston, Montana, on May 23, 1952. Number 2683 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2683 at Livingston, Montana, on May 23, 1952. Number 2683 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2682 at Livingston, Montana, in August 1943. Number 2682 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific 2681, a class A-5, leads a westbound extra freight up Bozeman Pass near Livingston, Montana, with the Absorka Mountains in the background in September 1953. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train, semaphore signal.

Northern Pacific 2681, a class A-5, leads a westbound extra freight up Bozeman Pass west of Livingston, Montana, in September 1953. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train.