Album of black and white photographs of the construction of a diversion dam on the Clackamas River, laying of water pipes, and the construction of the Oak Grove Powerhouse on the river.

Nine photographs of parade floats for Portland General Electric Co. in the Portland Rose Festival, 1954 and 1964, and an unidentified parade featuring rail cars depicting Oregon agriculture and industry.

Photographs and printed materials relating to the work of John S. Volpe, an engineer for the Portland Electric Power Company (later named the Portland General Electric Company) in Portland, Oregon, who supervised the laying of underground utility cables. Images date from the mid-1920s to the early 1950s; they document electrical work throughout Portland, and include photographs of John S. Volpe, cable-laying and submerged-cable projects, and employees and company events.