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Potomac Electric Power Co. substations. Bunker Hill Rd. substation I

Potomac Electric Power Co. substations. Bunker Hill Rd. substation I

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Bunker Hill Rd. substation IV

Potomac Electric Power Co. substations. Bunker Hill Rd. substation IV

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Bethesda substation VI

Potomac Electric Power Co. substations. Bethesda substation VI

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation no. 38 window display: Buy war bonds and stamps I

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Great Depression, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Cooperate II

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Hasten peace on earth, give war bonds

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation no. 38 window display: Home service daily radio show IV

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation exterior IV

Potomac Electric Power Co. substations. Substation exterior IV

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Bunker Hill Rd. substation II

Potomac Electric Power Co. substations. Bunker Hill Rd. substation II

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Home service daily radio show V

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, technology, 1940s-1950s, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: PEPCO season's greetings I

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation no. 38, 1942 exhibit II

Potomac Electric Power Co. substations. Substation no. 38, 1942 exhibi...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Home service daily radio show III

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Let's all back the attack, buy war bonds

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Bethesda substation II

Potomac Electric Power Co. substations. Bethesda substation II

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Muirkirk substation, Maryland

Potomac Electric Power Co. substations. Muirkirk substation, Maryland

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Silver Hill, Maryland substation I

Potomac Electric Power Co. substations. Silver Hill, Maryland substati...

Picryl description: Public domain image of a power station, dam, electric generator, industrial building, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation at 13th and Kearny St. N.E. II

Potomac Electric Power Co. substations. Substation at 13th and Kearny ...

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. window display: Better light for better sight

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. w...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation window display: Better light means better sight

Potomac Electric Power Co. substations. Substation window display: Bet...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation window display: Buy more war stamps

Potomac Electric Power Co. substations. Substation window display: Buy...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation no. 38 window display: Buy war bonds and stamps II

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: They're gonna be scarce

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Conserve electricity

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: PEPCO appliance exchange I

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Keep the bonds you have

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Proposed site for new substation

Potomac Electric Power Co. substations. Proposed site for new substati...

Potomac Electric Power Company (PEPCO) is a publicly traded utility company that provides electric service to customers in the Washington D.C. metropolitan area, including the District of Columbia and parts of ... More

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. window display: Home heating plants

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. w...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation transformer I

Potomac Electric Power Co. substations. Substation transformer I

Picryl description: Public domain image of a power station, dam, electric generator, industrial building, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Rockville substation, Maryland

Potomac Electric Power Co. substations. Rockville substation, Maryland

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Bethesda substation IV

Potomac Electric Power Co. substations. Bethesda substation IV

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

One of many substations inundated by the Shenandoah River. Virginia

One of many substations inundated by the Shenandoah River. Virginia

Picryl description: Public domain photograph of a dock, harbor, boats, water, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation with power lines

Potomac Electric Power Co. substations. Substation with power lines

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Take good care of what you have

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Rx for ailing appliances

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Picryl description: Public domain image of a cemetery, memorial, monument, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation no. 38 window display: PEPCO appliance exchange II

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Bethesda substation I

Potomac Electric Power Co. substations. Bethesda substation I

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation site at 13th and Kearny St. N.E. II

Potomac Electric Power Co. substations. Substation site at 13th and Ke...

Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Bunker Hill Rd. substation V

Potomac Electric Power Co. substations. Bunker Hill Rd. substation V

Public domain photograph of a machine part, motor, equipment, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation entrance

Potomac Electric Power Co. substations. Substation entrance

Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Bethesda substation V

Potomac Electric Power Co. substations. Bethesda substation V

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation no. 38 window display: I will do my part resolution

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Home service daily radio show I

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. window display: Oil heating

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. w...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. window display: Boy Scout troop 23

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. w...

Public domain photograph of boy scouts, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 transformer enclosure II

Potomac Electric Power Co. substations. Substation no. 38 transformer ...

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation exterior II

Potomac Electric Power Co. substations. Substation exterior II

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation no. 38 window display: Take care of what you have

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Conserve the things you have

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation window display: Let's go! U.S.A

Potomac Electric Power Co. substations. Substation window display: Let...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation no. 38 window display: Help make victory a reality, buy war bonds

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation no. 38 window display: Buy war bonds II

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: PEPCO season's greetings II

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation in Anacostia transformer enclosure

Potomac Electric Power Co. substations. Substation in Anacostia transf...

The Theodor Horydczak Collection documents the architecture and social life of the Washington DC metropolitan area in the 1920s, 1930s, and 1940s.

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. window display: Boy Scout troop 23

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. w...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Champlain St. station

Potomac Electric Power Co. substations. Champlain St. station

Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation at 13th and Kearny St. N.E. I

Potomac Electric Power Co. substations. Substation at 13th and Kearny ...

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Picryl description: Public domain image related to an industrial revolution, 19th century industry, factory, free to use, no copyright restrictions image.

Picryl description: Public domain image related to an industrial revol...

Public domain image with Picryl description as title Potomac Electric Power Company (PEPCO) is a publicly traded utility company that provides electric service to customers in the Washington D.C. metropolitan ... More

Potomac Electric Power Co. substations. Substation repair work

Potomac Electric Power Co. substations. Substation repair work

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation window display: Better light means better sight

Potomac Electric Power Co. substations. Substation window display: Bet...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Conserve electricity

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Champlain St. station

Potomac Electric Power Co. substations. Champlain St. station

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. window display: Oil heating

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. w...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 transformer enclosure I

Potomac Electric Power Co. substations. Substation no. 38 transformer ...

Public domain photograph of building construction site, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation site at 13th and Kearny St. N.E. I

Potomac Electric Power Co. substations. Substation site at 13th and Ke...

Picryl description: Public domain image of a park alley, trees, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation exterior I

Potomac Electric Power Co. substations. Substation exterior I

Picryl description: Public domain photo of an industrial building, factory or warehouse, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation window display: Buy defense stamps and bonds

Potomac Electric Power Co. substations. Substation window display: Buy...

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Save waste fats

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Conserve critical resources for war

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Better care means less repair

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Takoma substation

Potomac Electric Power Co. substations. Takoma substation

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation window display: Keep the light of liberty burning

Potomac Electric Power Co. substations. Substation window display: Kee...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Your community war fund

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Great Depression, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Conserve critical war resources

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Great Depression, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Powerlines II

Potomac Electric Power Co. substations. Powerlines II

Potomac Electric Power Company (PEPCO) is a publicly traded utility company that provides electric service to customers in the Washington D.C. metropolitan area, including the District of Columbia and parts of ... More

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. window display: Flameless cooking I

Potomac Electric Power Co. substations. Substation on Wisconsin Ave. w...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. 18th St. substation II

Potomac Electric Power Co. substations. 18th St. substation II

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation on Wisconsin Ave.

Potomac Electric Power Co. substations. Substation on Wisconsin Ave.

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation exterior VI

Potomac Electric Power Co. substations. Substation exterior VI

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Federal Courthouse

Potomac Electric Power Co. substations. Federal Courthouse

Picryl description: Public domain photograph of a historic courthouse building, court, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation window display: Civilian defense

Potomac Electric Power Co. substations. Substation window display: Civ...

Public domain photograph of stained glass design, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Take good care of the appliances you have

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation window display: Let's go! U.S.A.

Potomac Electric Power Co. substations. Substation window display: Let...

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Buy another bond today

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Home service daily radio show II

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation exterior V

Potomac Electric Power Co. substations. Substation exterior V

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation site at 13th and Kearny St. N.E. III

Potomac Electric Power Co. substations. Substation site at 13th and Ke...

Picryl description: Public domain image of a park alley, trees, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. G Place N.W. substation

Potomac Electric Power Co. substations. G Place N.W. substation

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Substation with transformer I

Potomac Electric Power Co. substations. Substation with transformer I

Picryl description: Public domain image of a power station, dam, electric generator, industrial building, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation with transformer III

Potomac Electric Power Co. substations. Substation with transformer II...

Picryl description: Public domain image of an industrial building, power plant, electric generator, 20th century architecture, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation no. 38 window display: Electricity keeps 'em rolling

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Picryl description: Public domain image of a mural painting, architecture, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation no. 38 window display: Salvage for victory

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Public domain photograph of midcentury American industry, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Back the attack

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Substation no. 38 window display: Better care means less repair

Potomac Electric Power Co. substations. Substation no. 38 window displ...

Item title devised. The Theodor Horydczak Collection is a collection of photographs taken by Theodor Horydczak (1890-1971) a Polish-born American photographer who worked in Washington D.C. from the 1910s to th... More

Potomac Electric Power Co. substations. Bunker Hill Rd. substation III

Potomac Electric Power Co. substations. Bunker Hill Rd. substation III

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation powerlines and transformer

Potomac Electric Power Co. substations. Substation powerlines and tran...

Picryl description: Public domain photograph of a road works, construction, excavation, free to use, no copyright restrictions.

Potomac Electric Power Co. substations. Substation in Anacostia transformer enclosure

Potomac Electric Power Co. substations. Substation in Anacostia transf...

Public domain photograph of midcentury American architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. L St. substation between 16th and 17th Sts.

Potomac Electric Power Co. substations. L St. substation between 16th ...

Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.

Potomac Electric Power Co. substations. Machine in J St. station

Potomac Electric Power Co. substations. Machine in J St. station

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. No. 6 unit in substation no. 2, wide angle

Potomac Electric Power Co. substations. No. 6 unit in substation no. 2...

Public domain photograph related to Potomac Electric Power Company, free to use, no copyright restrictions image - Picryl description

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