Photograph showing the boilers at Station E in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. Written at the top of each boiler is “Cahall Safety Boiler, The Aultman & Taylor MCH Y Co. Builders, Mansfield, Ohio.”

Photograph showing the boilers at Station E in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. Written at the top of each boiler is “Cahall Safety Boiler, The Aultman & Taylor MCH Y Co. Builders, Mansfield, Ohio.”

Photograph showing the exterior of Station L taken from across the water (now the Oregon Museum of Science and Industry) with several buildings visible. The hog fuel pile can be seen on the right, and several loaded barges can be seen next to the docks on the left side of the image. The Willamette River is in the foreground. Part of the image is masked with paper.

Photograph of the interior of Station L showing a large electrical system. A sign says “Trans C21-22-23 Trans C11-12-13 Neutral Ground Sw. Neutral Ground SW.”

Photograph of large rotary converts at unidentified location. Several other large pieces of machinery can be seen in the background.

Photograph of rotary convert machinery in unidentified location.

Photograph showing exterior and large machinery in Station L building. Several large generators can be seen on the main floor, with all peaked ceiling.

Photograph showing five men looking at the camera and standing in the metal framework on a support tower in the process of being built. Water and a section of a dock can be seen on the right side of the image, next to a large brick building with several rows of windows. Written on the negative in pencil is “E-301-L-3269, first panel of tower support for cinder collector, Sta. L., May 13 1922.”

Photograph of an electrical unit (generator?) at Station L (now Oregon Museum of Science and Industry). A set up steps leads to an upper part of the unit, next to several round gauges. In the background, several other pieces of electrical equipment can be seen in front of large windows.

Photograph showing electrical equipment and pipes at Station L (now Oregon Museum of Science and Industry). Several gauges, wheels and levers can be seen throughout the image. In the background, metal sheeting can be seen on the far wall. Written on the image is “8-5-1921.” (Image note: see related images PGE 12-72, PGE 12-76, PGE 12-79).

Photograph showing a large electrical unit (generator) at Station L (now Oregon Museum of Science and Industry). Two holes can be seen in the floor in front of the unit, and several pipes are visible in the background. Written on the negative is “PGE 12-76” and “5-28-21.” Also written on the image in pencil is “E-301-L-3330.” (Image note: see related image PGE 12-72, PGE 12-77, PGE 12-79).

Photograph showing a large electrical unit (generator?) at Station L (now Oregon Museum of Science and Industry). On the left side of the frame is a wooden crate and wooden boards. Written on the negative is “4-19-21.” (Image note: see related image PGE-12-72, PGE 12-76, PGE 12-77).

Photograph showing a large electrical unit (generator?) at Station L (now Oregon Museum of Science and Industry). In the foreground of the image is a wooden crate with pipes. Written on the negative is “4-15-21.” Also on the back of the negative is written “E-301-L-3326.” (image note: see related image PGE-12-76, PGE 12-77, PGE 12-79).

Photograph showing the interior of Station C in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. Large wheeled mechanisms are visible.

Photograph showing the interior of Station C in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. Large wheeled mechanisms are visible, and a man can be seen looking at the camera while sitting near the building wall.

Photograph showing the exterior of the Station E brick building in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. A large smokestack is visible on the left side of the building, and railroad tracks pass through the foreground. In the distance, a man sits next to a small kiosk building.

Photograph showing the exterior of Station E in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. Two smokestacks can be seen: one above the building in the center of the frame, and a large one to the left.

Photograph showing the interior of Station C in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. Several large machines are visible, and the building walls appear to be made of metal sheeting. Near the front, a sign on one machine says “Buffalo Forge Co. Heating and Ventilating Engineers, Buffalo, N.Y.”

Photograph showing the interior of the Station E boiler room in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue.

Photograph showing the interior of the Station E in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. Several large machines are visible throughout the room, and a small desk can be seen at the center of the frame. One wall includes large arched windows.

Photograph showing the interior of the A large 7500 KW turbine generator is in the middle of the frame, and arched windows can be seen in the background.

Photograph showing the interior of Station C in northwest Portland, near the intersection of NW 21st Avenue and NW Sherlock Avenue. On the generator nearest the camera is written “General Electric Company.”

Photograph taken at Station L (later the Oregon Museum of Science and Industry), looking downward at two generators. The far unit is being rewound with visible cable. Pieces of debris can be seen around the room, in addition to possible damage on the back wall. Large windows can be seen along the left wall, and metal plating lines the back wall.

Photograph showing the exterior of Station L (now the Oregon Museum of Science and Industry) with several buildings visible. Railroad tracks pass through the front of the frame, and water from the Willamette River can be seen in front of the main stone building.

Photograph of the engine room of Station L (now the Oregon Museum of Science and Industry) showing machinery. A person in a white shirt can be seen on the right side of the frame, and the front unit has “General Electric Company” written on it.

Photograph showing the boiler room at Station L (now the Oregon Museum of Science and Industry). A long row of boiler doors can be seen, and a man in a hat and overalls stands in front of one while looking at the camera. Large metal beams can be seen at the top of the boiler stuctures.

Photograph taken from a high angle of the hog fuel pile at Station L (now the Oregon Museum of Science and Industry), looking south. The Willamette River can be seen on the right side of the frame, and two unidentified churches can be seen in the distance.

Photograph taken at Station L (now the Oregon Museum of Science and Industry) of hog fuel being unloaded via a derrick from a barge on the Willamette River. The Hawthorne bridge can be seen in the distance, as well as other boats. One person stands on the barge watching a crate being lifted onto the dock.