Northern Pacific steam locomotive 5135 at Missoula, Montana, circa 1950. Number 5135, a class Z-8 built by Alco-Schenectady in 1943, is on the turntable at the roundhouse. Photo by Blackie Moser, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, turntable, roundhouse

Northern Pacific steam locomotive 5134 at Missoula, Montana, on August 21, 1943. Number 5134 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5134 parked next to the water sport at Missoula, Montana, circa 1949. Number 5134 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5133 at Missoula, Montana, on August 20, 1949. Number 5133 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5133 waiting for its next train at Missoula, Montana, circa 1949. Number 5133 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5132 at Missoula, Montana, in August 1943. Number 5132 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5130 at Missoula, Montana, on August 25, 1943. Number 5130 is a class Z-8 built by Alco-Schenectady in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 5123 at Missoula, Montana, in August 1943. Number 5123 is a class Z-7 built by Alco-Schenectady in 1941. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific 5123, a class Z-7, passes the depot at Missoula, Montana, with an eastbound extra freight in August 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train.

Northern Pacific steam locomotive 5122 at Missoula, Montana, in August 1943. Number 5122 is a class Z-7 built by Alco-Schenectady in 1941. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo