Northern Pacific steam locomotive 155, circa 1910. Number 155 is a class S built by Schenectady in 1898. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight train

Northern Pacific steam locomotive 155, circa 1905. Number 155 is a class S built by Schenectady in 1898. Photo by Asahel Curtis, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight train

Northern Pacific steam locomotive 1549, an American Locomotive Company - Brooks Class W at Bellingham, Washington. View of tender; on north leg of wye; coal loader visible; date is likely April, 1954 based on similarity with TRWahl0598. Other subject categories: Locomotive-Steam, Locomotive-Terminal

Northern Pacific steam locomotive 1549, American Locomotive Company - Brooks Class W at Bellingham, Washington at coal loader on north leg of wye. Other subject categories: Locomotive-Steam

Northern Pacific steam locomotive 1549, American Locomotive Company - Brooks Class W at Bellingham, Washington. View of tender; on north leg of wye; coal loader visible. Other subject categories: Locomotive-Steam

Northern Pacific steam locomotive 1549, an American Locomotive Company - Brooks Class W, at Bellingham, Washington on north leg of wye; coal loader visible; photograph sequence TRWahl0521-0518. Other subject categories: Locomotive-Steam, Locomotive-Terminal

Northern Pacific steam locomotive 1549, an American Locomotive Company - Brooks Class W, at Bellingham, Washington on north leg of wye; coal loader visible; photograph sequence TRWahl0521-0518. Other subject categories: Locomotive-Steam, Locomotive-Terminal

Northern Pacific steam locomotive 1549, an American Locomotive Company - Brooks Class W, at Bellingham, Washington with Red Devil coal loader; Class W 1549 is being fueled; photograph sequence TRWahl0521-0518. Other subject categories: Locomotive-Steam, Locomotive-Terminal

Northern Pacific steam locomotive 1549, American Locomotive Company - Brooks Class W at Bellingham, Washington on north leg of wye; coal loader visible. Other subject categories: Locomotive-Steam

Northern Pacific steam locomotive 1549, an American Locomotive Company - Brooks Class W, at Bellingham, Washington on north leg of wye; coal loader track in background. Other subject categories: Locomotive-Steam, Car-Gondola