Northern Pacific steam locomotive 21 at Billings, Montana, on September 04, 1953. Number 21, a class Y-1 built by Schenectady in 1900, awaits its next switching assignment behind the steam lines near the roundhouse with sister number 20. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 210 at Martin, Washington, circa 1886. Number 210 (old number series), built by Portland in 1882, poses during construction of the Stampede Pass line. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, work train, railroad crew

Northern Pacific steam locomotive 210 at Martin, Washington, circa 1886. Number 210 (old number series), built by Portland in 1882, poses during construction of the Stampede Pass line. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, work train, railroad crew

Northern Pacific steam locomotive 2100 at South Tacoma, Washington, on August 11, 1936. Number 2100, a class Q-1 built by Alco-Schenectady in 1903, rests on the RIP track at South Tacoma after a wreck on the Pasco-Walla Walla line. She was scrapped in May 1937. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 2103 at Dilworth, Minnesota, on September 12, 1943. Number 2103 is a class Q-1 built by Alco-Schenectady in 1904. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2107 at Argo, Washington, in 1925. The Q-1 Pacific was built in 1905 and scrapped at South Tacoma, Washington, in 1933. Photo by J.A. Turner. Other Subject Classes: steam locomotive, railroad crew

Northern Pacific steam locomotive 2107 at Guilds Lake Yard in Portland, Oregon, circa 1915. Number 2107 is a class Q-1 built by Alco-Schenectady in 1904. Photo by H.H. Arey, J.M. Fredrickson collection. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2107 with passenger train and crew members at Union Station in Portland, Oregon, circa 1915. Number 2107 is a class Q-1 built by Alco-Schenectady in 1904. J.M. Fredrickson collection. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2107 leads a doubleheaded passenger train into King Street Station in Seattle, Washington, on June 28, 1924. Train No. 2 left Seattle at 9:15 a.m., and is at Argo Crossing 3.2 miles south of King Street Station. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific steam locomotive 2108 leads a passenger train at Argo, Washington, in 1925. The Q-1 Pacific was built in 1905 and scrapped at South Tacoma, Washington, in 1930. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train