Northern Pacific steam locomotive 5000 from a company roster book in 1928. Number 5000 is a class Z-5 built by Alco-Schenectady in 1928. J.M. Fredrickson collection. Number 5000 is documented in a booklet titled "The Worlds' Largest Steam Locomotive". Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 5000 on display at Mandan, North Dakota, in 1928. Number 5000 is a class Z-5 built by Alco-Schenectady in 1928. J.M. Fredrickson collection. Number 5000 is on public display in Mandan as the "World's Largest Steam Locomotive". Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 500 with a snow plow, circa 1898. Number 500 is a class D-3 built by Baldwin in 1889. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 500 poses with crew, circa 1890. Number 500 (old number series) is a class M built by Baldwin in 1886 for service on the Stampede Pass switchbacks. Renumbered to No. 1. in 1897. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 50 awaits its next assignment, circa 1935. Number 50 is a class F-1 built by Baldwin in 1888. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 50 at Tacoma, Washington, on March 30, 1936. Number 50, a class F-1 built by Baldwin in 1888, is parked on a radial track at the Tacoma roundhouse. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roundhouse

Northern Pacific steam locomotive 50 at Tacoma, Washington, on February 29, 1936. Number 50, a class F-1 built by Baldwin in 1888, is parked on a radial track at the Tacoma roundhouse. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roundhouse

Northern Pacific steam locomotive 50 at Tacoma, Washington, on March 30, 1936. Number 50, a class F-1 built by Baldwin in 1888, is parked on a radial track at the Tacoma roundhouse. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roundhouse

Northern Pacific steam locomotive 490 on June 09, 1916. Number 490 is a class D-3 built by Baldwin in 1889. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 490 at Roslyn, Washington, circa 1890. Number 490 (old number series), a class F-1 built by Baldwin in 1890, poses with its crew. She was later numbered as 62 and survived until 1932. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 490 at Roslyn, Washington, 1890. Number 490 (old number series), a class F-1 built by Baldwin in 1890, poses with its crew. She was later numbered as 62 and survived until 1932. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 488 at Pe Ell, Washington, in 1906. Number 488 is a class D-3 built by Baldwin in 1889. She was one of Highline Anderson's first assigned engines. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 486 at Cosmopolis, Washington, circa 1915. Number 486 is a class D-3 built by Baldwin in 1889. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 47 at Brainerd, Minnesota, on June 12, 1916. Number 47, a class F-6 built by Richmond in 1895, after conversion to an 0-8-0 switcher, poses for its company photo at Brainerd. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 464 with a freight train, circa 1915. Number 464 is a class D-3 built by Baldwin in 1889. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight train

Northern Pacific steam locomotive 46 poses for a roster photo on July 08, 1916. Number 46, a class F-5 built by Schenectady in 1900, after conversion to an 0-8-0 switcher, poses next to a white canvas during its company photo. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 46 circa 1910. Posed with her crew, Number 46, a class F-5 built by Schenectady in 1900, was obtained from the Seattle & International as their No. 12. Later converted to an 0-8-0 switcher. 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 4501 at Helena, Montana, in September 1953. Number 4501 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 4501 at Butte, Montana, on August 19, 1949. Number 4501 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 4501 at Butte, Montana, on August 19, 1949. Number 4501 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 4500 at Butte, Montana, on August 19, 1949. Number 4500 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 4500 at Butte, Montana, on August 19, 1949. Number 4500 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 45, circa 1910. Posed with her crew, Number 45, a class F-5 built by Schenectady in 1900, was obtained from the Seattle & International as their No. 11 and later converted to an 0-8-0 switcher. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, railroad crew, wood box car

Northern Pacific steam locomotive 43 at Auburn, Washington, on February 20, 1937. Number 43, a class Y built by Schenectady in 1898, is at the roundhouse. Photo by Emery Roberts, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roundhouse

Northern Pacific steam locomotive 423 with a passenger train at Elma, Washington, circa 1900. Number 423 is a class D-3 built by Baldwin in 1891. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 412 at Brainerd, Minnesota, on July 17, 1916. Number 412 is a class D-5 built by Baldwin in 1889. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 403 on September 14, 1916. Number 403 is a class D-6 built by Rogers in 1899. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Helper Northern Pacific locomotive number 4025 picks up a staff and respirator at Stampede, Washington, to proceed through Tunnel 4 and then Tunnel 3, the Stampede Tunnel, circa 1927. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, telegraph station, railroad crew.

Helper Northern Pacific locomotive number 4025 picks up a staff and respirator at Stampede, Washington, to proceed through Tunnel 4 and then Tunnel 3, the Stampede Tunnel, circa 1925. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, telegraph station, railroad crew.