Northern Pacific steam locomotive 36 at Missoula, Montana, on July 16, 1954. The engineer oils number 36 in the freight yard. Number 36 is a class Y built by Schenectady in 1898. Photo by Ron V. Nixon, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, railroad crew, freight yard

Northern Pacific steam locomotive 36 at Missoula, Montana, on August 24, 1943. The crew is boarding number 36, a class Y, which was built by Schenectady in 1898. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, railroad crew

Northern Pacific steam locomotive 36 at Butte, Montana, on August 19, 1949. Number 36, a class Y built by Schenectady in 1898, poses with its rods down at the roundhouse. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roundhouse

Northern Pacific steam locomotive 36 at Butte, Montana, on August 19, 1949. Number 36, a class Y built by Schenectady in 1898, poses with its rods down at the roundhouse. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roundhouse

Northern Pacific steam locomotive 35 at Butte, Montana, on August 19, 1949. Number 35, a class Y built by Schenectady in 1898, is coupled to a Burlington Route stock car in the yard. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight yard, stock car

Northern Pacific steam locomotive 35 at Butte, Montana, on August 19, 1949. Number 35, a class Y built by Schenectady in 1898, is coupled to a Burlington Route stock car in the yard. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight yard, stock car

Northern Pacific steam locomotive 34 at Billings, Montana, on September 04, 1953. Number 34, a class Y built by Schenectady in 1898, is parked at the Billings switcher track. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 33 at Missoula, Montana, on September 02, 1953. Number 33, a class Y built by Schenectady in 1898, takes a ride on the turntable. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, turntable, roundhouse

Northern Pacific steam locomotive 33 at Missoula, Montana, on September 02, 1953. Number 33, a class Y built by Schenectady in 1898, eases into stall 30 of the Missoula roundhouse. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roundhouse

Northern Pacific steam locomotive 32 at Missoula, Montana, on August 24, 1943. Number 32, a class Y built by Schenectady in 1898, is parked near the coal dock. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo