Photograph of a Pacific Bridge Company barge on a river; a second barge is visible in the background.

Photograph showing work train #927 in front of a two-story wooden building. On the left side of the image, a brick drugstore can be seen. What appears to be a rope and pulley system are visible on the train car.

Photograph showing horses, Russell 15-30 steam tractors, and wooden planks in a dirt clearing. In the background is a wooded hillside. Written on the negative “E301.09-O-248.”

Photograph showing two Russel 15-30 steam tractors being used to saw lumber. An awning is stretched over the area, and a wooden building can be seen in the background.

Photograph showing a quarry of loose dirt and rock, with a man standing next to an electric shovel vehicle. An arm extends from the machine over a pile of dirt and tree branches. In the background, a broken hillside can be seen. Written on the negative is “E301.09-O-112” and “R-1.”

A man stands next to a machine on the construction site of the Lloyd shopping center in Portland, Oregon. A wrecking ball crane sits in a large, cleared, dirt area. The caption on the negative sleeve reads, "Men starting on Lloyd project after strike - R.A. Heintz (contractor), Owen M. Cork (mechanic), Chris Bespflug (oiler), Russell Clemence (crane operator), F.C. Scott (superintendent)" (negative 1 of 3).

A man drives heavy construction machinery next to a wrecking ball crane on the construction site of the Lloyd shopping center in Portland, Oregon. A second man stands next to the machine and looks at the camera. The construction site is a large, cleared, dirt area. The caption on the negative sleeve reads, "Men starting on Lloyd project after strike - R.A. Heintz (contractor), Owen M. Cork (mechanic), Chris Bespflug (oiler), Russell Clemence (crane operator), F.C. Scott (superintendent)" (negative 3 of 3).

A derrick in the middle of the Willamette River picks up a log and moves it onto a barge. Other pieces of discarded wood and construction materials are piled on the barge. These are pieces of the old Morrison Bridge, which is being replaced. In the foreground, a second derrick sits on the border of the river. View taken from the east side of the river, looking west toward downtown Portland and the KPOJ Journal building (negative 2 of 3).

Photograph of 2 bulldozers on railroad tracks at the base of a hillside. Taken from behind the bulldozers, the drivers of both machines look back at the camera.

Photograph of a train carrying construction materials on flat cars. There is a second, empty railroad track in the foreground.

Photograph of a train carrying construction machinery on flat cars to fulfill a sewer contract in Eugene, Oregon. A sign on the side of the train reads, "These ten cars are loaded with machinery to be used by James Kennedy of Fargo, North Dakota on the $500,000.00 sewer contract at Eugene, Oregone (sic)." The name "Clark" is handwritten on the bottom of the print and this photograph was likely taken by F. Melvin Clark. Handwriting on the back of the print reads, "Eugene."

Photograph of a man standing in front of a train carrying construction machinery to fulfill a sewer contract in Eugene, Oregon. The train is on the Oregon Electric Railway. Handwritten note on the back of the print reads, "First freight train run on Oregon Electric extension." Second handwritten note reads, "1st freight shipment over O.E.Ry. to Eugene - 12 cars of sewer contractor's outfit."

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.