Unidentified Baldwin 2-6-0 steam locomotive number 82, coupled to a loaded flatcar in an unknown location, circa 1925, with a similar operation in the distance. Photo from J.M. Fredrickson Collection. Other Subject Classes: steam locomotive, flatcar.

Two Northern Pacific GP-9 diesel locomotives with a local freight led by 211 on a branchline in Montana. GJ Werkema collection. Other subject classes: freight train, diesel locomotive

Two freight locomotives assist Amtrak diesel locomotives at Tacoma, Washington on January 2, 1972. Two Burlington Northern GP-9's leads Amtrak train number 198 toward Union Station at Tacoma in 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Turbo Train 50 at King Street Station in Seattle, Washington in 1971. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

View of tunnel portal from Port of Tillamook Bay passenger car number 55 at Tillamook, Oregon, on October 11, 1988. Photo by J.M. Fredrickson. Other Subject Classes: passenger car, tunnel.

Tug boat 'Edith' used in construction of the SP&S Columbia River Bridge, April 10, 1908. This is a postcard image.

TTX Corporation Autorack Car RTTX 903093 at Denver, Colorado, May 11, 1968, auto rack. Other subject classes: Autorack car

Photographs of urban rail public transportation that generally has a lower capacity and lower speed than heavy rail systems.

Photographs of urban rail public transportation that generally has a lower capacity and lower speed than heavy rail systems.

Photographs of urban rail public transportation that generally has a lower capacity and lower speed than heavy rail systems.