Northern Pacific right of way on Stampede Pass, circa 1910. Mountain grade through logged-off mountains near Borup Loop. Photo by Alma Floberg, J.M. Fredrickson collection.. Other Subject Classes: railroad right of way, mountains

Northern Pacific roundhouse at Duluth, Minnesota, August 15, 1961.

Northern Pacific roundhouse at Lester, Washington, circa 1900. View of brick engine house and turntable, one Class F-1-type steam locomotive in stall, employees. Photo by J.M. Fredrickson collection.. Other Subject Classes: roundhouse, steam locomotive, railroad employee

Northern Pacific roundhouse at Lester, Washington, circa 1900. View of brick engine house and turntable, one Class F-1 Consolidation type steam locomotive in stall, employees. Photo by J.M. Fredrickson collection.. Other Subject Classes: roundhouse, steam locomotive, railroad employee

Northern Pacific roundhouse at Lester, Washington, circa 1914. Brick engine house, turntable, steam locomotives, roundhouse worker. Copy of Ruth Eckes original, J.M. Fredrickson collection. Other Subject Classes: roundhouse, steam locomotive, railroad employee

Northern Pacific roundhouse at Lester, Washington, circa 1914. Brick engine house with six Class Y Consolidation-type steam locomotives in stalls, roundhouse workers. J.M. Fredrickson collection. Other Subject Classes: roundhouse, steam locomotive, railroad employee

Northern Pacific roundhouse (owned by the Burlington Northern since March 1, 1970) at Missoula, Montana, April 10, 1971.

Northern Pacific roundhouse (owned by the Burlington Northern since March 1, 1970) at Missoula, Montana, April 10, 1971.

Northern Pacific roundhouse (owned by the Burlington Northern since March 1, 1970) at Missoula, Montana, April 10, 1971.

Northern Pacific roundhouse at Seattle, Washington, circa 1960. Photo by J.M. Fredrickson . Other Subject Classes: roundhouse