Staff machine for operating trains through single-track territory, as used by Northern Pacific between Stampede and Martin, Washington. Copy from Union Pacific rule book. Photo by J.M. Fredrickson . Other Subject Classes: signal equipment

Northern Pacific Stampede Tunnel, Washington State, circa 1890. West portal of Stampede Tunnel, with ventilation building, remains of trestle on switchback. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: tunnel, vent plant, bridge, mountains

Northern Pacific Stampede Tunnel at Stampede, Washington, on December 2, 1967. View from cab of diesel locomotive at west portal of tunnel 3, tunnel vent equipment signal, electrical substation, in snow. Photo by J.M. Fredrickson . Other Subject Classes: tunnel, signal, mountains

Northern Pacific ventilation plant at Stampede, Washington, circa 1916. Ventilation equipment for clearing smoke from Stampede Tunnel, under construction, with workers. J.M. Fredrickson collection. Other Subject Classes: tunnel, construction workers

Northern Pacific Stampede Tunnel at Stampede, Washington, circa 1887. West portal and outbuilding during construction, mountain cleared over tunnel alignment. J.M. Fredrickson collection. Other Subject Classes: tunnel, mountains

Northern Pacific mainline at Stampede, Washington, circa 1918. View west down single track toward east portal of tunnel 4, surrounding mountains. J.M. Fredrickson collection. Other Subject Classes: track, tunnel, mountains

Northern Pacific construction train at Stampede, Washington, circa 1887. 0-4-0 steam locomotive "Ceta," used by Nelson Bennett Contractors, during the construction of Stampede Tunnel, tipping gondolas, construction workers. J.M. Fredrickson collection. Other Subject Classes: construction train, steam locomotive, construction worker, freight car

Northern Pacific construction train at Stampede, Washington, circa 1887. 0-4-0 steam locomotive "Ceta," used by Nelson Bennett Contractors, during the construction of Stampede Tunnel, tipping gondolas, construction workers. J.M. Fredrickson collection. Other Subject Classes: construction train, steam locomotive, construction worker, freight car