Interior photograph of room 621 in the Portland Electric Building, showing electric meters and phone system. Two desks can be seen, as well as a clock and ceiling light. A board on the far wall shows station and substations names. Building located at 621 Southwest Alder street in Portland.

Interior photograph of room 621 in the Portland Electric Building, showing load dispatchers, which were first operated in 1912. The far desk holds numerous devices, and an “Oregon Life” calendar hangs on the wall. Building located at 621 Southwest Alder street in Portland.

Interior photograph of room 621 in the Portland Electric Building, showing load dispatchers, which were first operated in 1912. The far desk holds numerous devices, including a telephone system. Building located at 621 Southwest Alder street in Portland.

Interior photograph of room 621 in the Portland Electric Building, showing large white dispatch board with system stations and substations mapped. A white sink can be seen in the corner. Building located at 621 Southwest Alder street in Portland.

Interior photograph of room 621 in the Portland Electric Building, showing large white dispatch board with system stations and substations mapped. Building located at 621 Southwest Alder street in Portland.

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.”