Photograph showing a view of a train stopped on railroad tracks in Willow Creek Canyon near Madras, Oregon. In the distance, a railroad construction crew works on the railroad track through the remaining section of the canyon. Taken from the top of the canyon, looking down at the train and the creek. Handwritten label at the bottom of the print reads, "Oregon Trunk Ry. Willow Creek Canyon, near Madras, Ore. Photo by Hedlund, Madras, Ore."

Photograph of 4 railroad construction workers standing next to a railroad trestle under construction. The trestle is built across a large field behind the workers and extends into the distance. This construction was part of the extension of the Oregon Electric Railway to Eugene, Oregon. Handwritten note on the back of the print reads, "Temporary trestle to be filled in by Steam Shovel No. 4, Eugene extension of O.E.Ry."

Photograph of a group of railroad construction workers standing on railroad tracks in front of a machine mounted on a flatcar. They are laying new railroad tracks. The flatcar is long and carries a locomotive and stacks of wooden planks for construction. Scattered men on the flatcar look at the camera. This construction was part of the extension of the Oregon Electric Railway to Albany and Corvallis. Handwritten note on the back of the print reads, "Oregon Electric track laying machine at work on Albany-Corvallis extension."

Photograph of a crawler tractor on a railroad track. The tractor is an International TracTracTor. Handwritten note on the back reads, "Electric Steel Foundry."

Photograph of a man driving a crawler tractor on a railroad track. The machine is an International TracTracTor. Photograph taken from behind the machine as it attempts to turn on the tracks.

Group of men with horse drawn carts grading. Transcription from slide: “Grading.”

Transcription from slide: “Track laying.”

Team of men clearing brush with axes. Transcription from slide: “Heavy brush encountered on Alsea southern railroad.”

Transcription from slide: “Track laying on trestle.”

Transcription from slide: “Track laying.”

A crowd of people watch as a turntable is built at a new roundhouse for Spokane Portland & Seattle Railway rail yard on 9th Ave. in Portland. A track can be spanning the turntable area, with with hoisting cranes above (negative 3 of 9).

Workers under a newly installed turntable track at a roundhouse being constructed at Spokane Portland & Seattle Railway rail yard on 9th Ave. in Portland. The tracks can be seen above the sunken hole, where workers are digging with shovels (negative 6 of 9).

A railroad turntable being built at a new roundhouse for Spokane Portland & Seattle rail yard on 9th Ave. in Portland. A track can be spanning the turntable area, with several people standing around the sunken area. Cranes can be seen at either side of the frame (negative 1 of 9).