Pacific & Idaho Northern Railway streetcar 100 with the baggage door open in Idaho, circa 1932. J.M. Fredrickson collection. Other Subject Classes: streetcar

Overhead view photo from the rear of a Heisler three truck locomotive with a diamond type frame with motor installed and waiting for the boiler at Erie, Pennsylvania. Photograph by Schauble.

Builder photo of Construction Number 1368 showing right side of Oval Wood Dish Company 63 Ton, Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania, January 1918. This locomotive was used for logging near Kildare, New York. This company in May 1920 became the Oval Wood Dish Corporation. Photograph by Schauble.

Builder photo of Construction Number 1352 showing right side of Oval Wood Dish Company 63 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania, January 1917. This locomotive was used for logging near Kildare, New York. This company in May 1920 became the Oval Wood Dish Corporation. Photograph by Schauble.

Engine crews pose with two Oso Logging Company Climax locomotives out on the company line in Washington State, circa 1912. J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, geared locomotive, railroad crew

Oriental Limited Passing Steamships Minnesota and Dakota at the Great Northern Dock, Smith Cove, Seattle, Washington in 1905, from the University of Washington Collection.

Builder photo of Construction Number 1201 showing right side of Oregon-Washington Timber and Railway Company 60 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in May 1910. This locomotive was used for logging near Cruzette, Washington. Photograph by Schauble.

Builder photo of Construction Number 1159 showing right side of Oregon-Washington Logging Company 60 Ton Two Truck Heisler Geared Steam Locomotive Number 2 at Erie, Pennsylvania in April 1909. This was used for logging near Cruzette, Washington. Photograph by Schauble.

Builder photo of Construction Number 1148 showing right side of Oregon-Washington Logging Company 39 Ton Two Truck Heisler Geared Steam Locomotive Number 1 at Erie, Pennsylvania in November 1908. This locomotive was used for logging at Glacier, Washington. Photograph by Schauble.

SP&S crane X-35 and wrecking crane X-5 working on rebuilding Oregon Trunk Railway Bridge T-149-6 at Bend, Oregon circa 1956.

SP&S crane X-35 and wrecking crane X-5 working on rebuilding Oregon Trunk Railway Bridge T-149-6 at Bend, Oregon circa 1956.

Builder photo of Construction Number 1153 showing left side of Oregon Timber and Lumber Company 42 Ton Two Truck Heisler Geared Steam Locomotive Number 3 at Erie, Pennsylvania in January 1909. This was used for logging out of Clifton, Oregon. Photograph by Schauble.

Oregon Railroad and Navigation Company, (OR&N) a subsidiary of the Union Pacific Railroad, Motor Car number 1 at Dayton, Washington, undated. Photo by Jerry Swart, J.M. Fredrickson collection. Other Subject Classes: motor car.

Oregon Portage Railway 0-4-0 steam locomotive "Oregon Pony" on display at Cascade Locks Historical Museum, Oregon, on July 10, 1967. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, display

Oregon Electric ALCO RS-1 diesel locomotive Number 55 at Portland, Oregon. Locomotive was later sold to the SP&S.

Leased Oregon Electric ALCO RS-1 diesel locomotive Number 55 at Portland, Oregon switching a coach on February 2, 1946. Locomotive later sold to the SP&S.

Builder photo of Oregon Electric ALCO RS-1 diesel locomotive Number 54 at Schenectady, New York. Locomotive later sold to the SP&S. Photo by the American Locomotive Company.

Oregon Electric ALCO RS-1 diesel locomotive Number 54 at Portland, Oregon. Locomotive was later sold to the SP&S.

Oregon Electric ALCO RS-1 diesel locomotive Number 53 at Portland, Oregon circa 1945. Locomotive was later sold to the SP&S.

Oregon Electric ALCO RS-1 diesel locomotive Number 52 in the yard at Portland, Oregon on May 21, 1945. Locomotive later sold to the SP&S. Photo by Don Roberts.

Oregon Electric ALCO RS-1 diesel locomotive Number 52 in the yard at Portland, Oregon on May 21, 1945. Locomotive later sold to the SP&S. Photo by Don Roberts.

Oregon Electric ALCO RS-1 diesel locomotive Number 52 in Hoyt Street Roundhouse lineup at Portland, Oregon on May 1, 1946. Locomotrive later sold to the SP&S. Photo by W. C. Whittaker.

At Clatskanie, Oregon firewood is being loaded on leased Oregon & California 4-4-0 steam locomotive Number 1361 which was handling the first Astoria & Columbia River Railroad passenger train from Astoria to Portland, May 16, 1898.

At Clatskanie, Oregon firewood is being loaded on leased Oregon & California 4-4-0 steam locomotive Number 1361 which was handling the first Astoria & Columbia River Railroad passenger train from Astoria to Portland, May 16, 1898.

At Astoria, Oregon leased Oregon & California 4-4-0 steam locomotive Number 1361 is about to depart with the first Astoria & Columbia River Railroad passenger train from Astoria to Portland, May 16, 1898.

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains

On board Northern Pacific passenger train number 25, the westbound Vista-Dome North Coast Limited, west of Livingston, Montana, on June 8, 1955. Looking south from vista-dome toward Absaroka Range, climbing grade between Livingston and Muir. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, mountains