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potomac electric power co

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Potomac Electric Power Co. air conditioning and lighting. Kay's Drug Store, 8th and K St. S.E. I

Potomac Electric Power Co. air conditioning and lighting. Kay's Drug S...

Picryl description: Public domain image of a department store, commercial building, downtown, shopping center, 19th-20th century, free to use, no copyright restrictions.

Potomac Electric Power Co. apartments and kitchens. Kitchen of home II

Potomac Electric Power Co. apartments and kitchens. Kitchen of home II

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

Potomac Electric Power Co. Buzzard Point plant. Damaged parts of generator unit at Buzzard Point plant VIII

Potomac Electric Power Co. Buzzard Point plant. Damaged parts of gener...

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

Potomac Electric Power Co. air conditioning and lighting. Super Liquor, 4723 Marlboro Pike

Potomac Electric Power Co. air conditioning and lighting. Super Liquor...

Picryl description: Public domain image of a department store, commerce, shopping, main street, city downtown, early 20th-century, free to use, no copyright restrictions.

Potomac Electric Power Co. Alexandria plant. Worn parts on turbine no. 2 X

Potomac Electric Power Co. Alexandria plant. Worn parts on turbine no....

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Potomac Electric Power Co. Alexandria plant. Worn parts on turbine no. 2 II

Potomac Electric Power Co. Alexandria plant. Worn parts on turbine no....

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. Buzzard Point plant. Damaged parts on no. 2 turbine at Buzzard Point plant II

Potomac Electric Power Co. Buzzard Point plant. Damaged parts on no. 2...

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Electric Institute of Washington, Potomac Electric Power Co. Cooking school to Negroes

Electric Institute of Washington, Potomac Electric Power Co. Cooking s...

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Potomac Electric Power Co. commercial kitchens, restaurants and lighting. Interior of Waffle Shop at 619 Pennsylvania Ave., N.W. II

Potomac Electric Power Co. commercial kitchens, restaurants and lighti...

Public domain photograph of pharmacy, convenience store, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. Building. Gauge to measure electricity cost I

Electric Institute of Washington, Potomac Electric Power Co. Building....

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

Electric Institute of Washington, Potomac Electric Power Co. Building. Store or window displays, Washer and ironer week

Electric Institute of Washington, Potomac Electric Power Co. Building....

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

Electric Institute of Washington, Potomac Electric Power Co. Building. Window of Oil-o-matic oil burner, Barber & Ross, Inc

Electric Institute of Washington, Potomac Electric Power Co. Building....

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. View of PEPCO power plant I

Potomac Electric Power Co. View of PEPCO power plant I

Titles 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 the 19... More

Electric Institute of Washington, Potomac Electric Power Co. Bartlet lecturing on light to nurses

Electric Institute of Washington, Potomac Electric Power Co. Bartlet l...

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. Alexandria plant. Drive shaft showing damage II

Potomac Electric Power Co. Alexandria plant. Drive shaft showing damag...

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. Building. Meter reader's uniform

Potomac Electric Power Co. Building. Meter reader's uniform

Public domain image of a military portrait, uniform, armed forces, free to use, no copyright restrictions - Picryl description

Potomac Electric Power Co. Building. Potomac Electric Power Co. model home interior VI

Potomac Electric Power Co. Building. Potomac Electric Power Co. model ...

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. Buzzard Point plant. Closeups of turbine made for G.E. calendar III

Potomac Electric Power Co. Buzzard Point plant. Closeups of turbine ma...

Picryl description: Public domain photograph of a machine, industrial equipment, engine, generator, free to use, no copyright restrictions.

Potomac Electric Power Co. air conditioning and lighting. Hecht Department Store, men's shop

Potomac Electric Power Co. air conditioning and lighting. Hecht Depart...

Picryl description: Public domain image of a department store, commerce, shopping, main street, city downtown, early 20th-century, free to use, no copyright restrictions.

Potomac Electric Power Co. electric appliances. Electric range II

Potomac Electric Power Co. electric appliances. Electric range II

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

Potomac Electric Power Co. Plaster models of electrical history at Potomac Electric Power Co. VII

Potomac Electric Power Co. Plaster models of electrical history at Pot...

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. Power plant interior

Potomac Electric Power Co. Power plant interior

Titles 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 the 19... More

Electric Institute of Washington, Potomac Electric Power Co. Building. Breakfast in Raleigh Hotel

Electric Institute of Washington, Potomac Electric Power Co. Building....

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

Potomac Electric Power Co. Plaster models of electrical history at Potomac Electric Power Co. XIII

Potomac Electric Power Co. Plaster models of electrical history at Pot...

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

Potomac Electric Power Co. Benning plant. Smokestacks at Benning plant IV

Potomac Electric Power Co. Benning plant. Smokestacks at Benning plant...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. Stores of electric dealers X

Electric Institute of Washington, Potomac Electric Power Co. Stores of...

Picryl description: Public domain image of a department store, commerce, shopping, main street, city downtown, early 20th-century, free to use, no copyright restrictions.

Potomac Electric Power Co. air conditioning and lighting. PEPCO tunnel under building II

Potomac Electric Power Co. air conditioning and lighting. PEPCO tunnel...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Potomac Electric Power Co. Pole setting

Potomac Electric Power Co. Pole setting

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

Potomac Electric Power Co. electric appliances. Window display of irons

Potomac Electric Power Co. electric appliances. Window display of iron...

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

Potomac Electric Power Co. Buzzard Point plant. Interior of Buzzard Point plant V

Potomac Electric Power Co. Buzzard Point plant. Interior of Buzzard Po...

Picryl description: Public domain image of an industrial building, warehouse, depot, train station, 19th-20th century, free to use, no copyright restrictions.

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

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

Picryl description: Public domain photograph of a machine, industrial equipment, engine, generator, free to use, no copyright restrictions.

Potomac Electric Power Co. Benning plant. View to machinery and stairs at Benning plant

Potomac Electric Power Co. Benning plant. View to machinery and stairs...

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

Potomac Electric Power Co. apartments and kitchens. Cafritz apartments at Meigs Pl. III

Potomac Electric Power Co. apartments and kitchens. Cafritz apartments...

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. 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

Electric Institute of Washington, Potomac Electric Power Co. Building. Lecture in Electric Institute

Electric Institute of Washington, Potomac Electric Power Co. Building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

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. commercial kitchens, restaurants and lighting. Natural Food Restaurant II

Potomac Electric Power Co. commercial kitchens, restaurants and lighti...

Picryl description: Public domain image of a gas station, convenience store, 20th-century small town, free to use, no copyright restrictions.

Potomac Electric Power Co. miscellaneous. PEPCO chart IV

Potomac Electric Power Co. miscellaneous. PEPCO chart IV

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

Potomac Electric Power Co. Buzzard Point plant. Blowers at Buzzard Point plant II

Potomac Electric Power Co. Buzzard Point plant. Blowers at Buzzard Poi...

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

Potomac Electric Power Co. Buzzard Point plant. Damaged machine parts at Buzzard Point plant X

Potomac Electric Power Co. Buzzard Point plant. Damaged machine parts ...

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

Potomac Electric Power Co. Buzzard Point plant. 2nd St. gate, truck entrance, Buzzard Point plant

Potomac Electric Power Co. Buzzard Point plant. 2nd St. gate, truck en...

Public domain photograph of cars, gas station, car garage, 20th-century architecture, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. Building. Potomac Electric Power Co. store interior VII

Potomac Electric Power Co. Building. Potomac Electric Power Co. store ...

Picryl description: Public domain image of a department store, commerce, shopping, main street, city downtown, early 20th-century, free to use, no copyright restrictions.

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. miscellaneous. Railroad scene at 9th St. and Virginia Ave. S.W. I

Potomac Electric Power Co. miscellaneous. Railroad scene at 9th St. an...

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

Potomac Electric Power Co. apartments and kitchens. Cafritz apartments at Meigs Pl. I

Potomac Electric Power Co. apartments and kitchens. Cafritz apartments...

Public domain photograph of apartment room, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. apartments and kitchens. Eddystone Apartments, 1301 Vermont Ave., kitchen interiors and views of apartment III

Potomac Electric Power Co. apartments and kitchens. Eddystone Apartmen...

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Potomac Electric Power Co. miscellaneous. Manhole crew and truck II

Potomac Electric Power Co. miscellaneous. Manhole crew and truck II

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

Potomac Electric Power Co. Building. Sales office, conference room

Potomac Electric Power Co. Building. Sales office, conference room

Picryl description: Public domain photograph group portrait, free to use, no copyright restrictions.

Potomac Electric Power Co. miscellaneous. PEPCO chart XIV

Potomac Electric Power Co. miscellaneous. PEPCO chart XIV

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

Potomac Electric Power Co. apartments and kitchens. Cafritz Greenway apartments II

Potomac Electric Power Co. apartments and kitchens. Cafritz Greenway a...

Public domain photograph of apartment room, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. miscellaneous. PEPCO chart I

Potomac Electric Power Co. miscellaneous. PEPCO chart I

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

Potomac Electric Power Co. Buzzard Point plant. Damaged machine parts at Buzzard Point plant VI

Potomac Electric Power Co. Buzzard Point plant. Damaged machine parts ...

Public domain photograph related to Potomac Electric Power Company, 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...

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. Buzzard Point plant. Damaged machine  parts at Buzzard Point plant II

Potomac Electric Power Co. Buzzard Point plant. Damaged machine parts...

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Potomac Electric Power Co. miscellaneous. Copy of many women in nearby towns

Potomac Electric Power Co. miscellaneous. Copy of many women in nearby...

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

Potomac Electric Power Co. Buzzard Point plant. Damaged machine parts at Buzzard Point plant VIII

Potomac Electric Power Co. Buzzard Point plant. Damaged machine parts ...

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Potomac Electric Power Co. Building. Potomac Electric Power Co. store interior IV

Potomac Electric Power Co. Building. Potomac Electric Power Co. store ...

Public domain image of a large historic building, city hall, urban architecture, free to use, no copyright restrictions - Picryl description

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. apartments and kitchens. Apartment interior

Potomac Electric Power Co. apartments and kitchens. Apartment interior

Picryl description: Public domain image of a bureau, office furniture, desk, chair, free to use, no copyright restrictions.

Potomac Electric Power Co. Building. Transformer explosion IV

Potomac Electric Power Co. Building. Transformer explosion IV

Picryl description: Public domain photograph of a machine, industrial equipment, engine, generator, free to use, no copyright restrictions.

Electric Institute of Washington, Potomac Electric Power Co. Hyattsville Theatre school lecture

Electric Institute of Washington, Potomac Electric Power Co. Hyattsvil...

Picryl description: Public domain image of a school auditorium, college, education, building interior, free to use, no copyright restrictions.

Electric Institute of Washington, Potomac Electric Power Co. Cooking school in Electric Institute auditorium I

Electric Institute of Washington, Potomac Electric Power Co. Cooking s...

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

Electric Institute of Washington, Potomac Electric Power Co. Stores of electric dealers XI

Electric Institute of Washington, Potomac Electric Power Co. Stores of...

Public domain photograph of pharmacy, convenience store, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. Buzzard Point plant. 2nd St. gate, people entrance, Buzzard Point plant

Potomac Electric Power Co. Buzzard Point plant. 2nd St. gate, people e...

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

Electric Institute of Washington, Potomac Electric Power Co. Eye testing equipment

Electric Institute of Washington, Potomac Electric Power Co. Eye testi...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. service station. View showing large boulders from old service station building V

Potomac Electric Power Co. service station. View showing large boulder...

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

Potomac Electric Power Co. Building. Mary Turner of Potomac Electric Power Co. I

Potomac Electric Power Co. Building. Mary Turner of Potomac Electric P...

Picryl description: Public domain image of a group of people, United States politics, free to use, no copyright restrictions.

Electric Institute of Washington, Potomac Electric Power Co. Building. Bride, Electric Institute

Electric Institute of Washington, Potomac Electric Power Co. Building....

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

Potomac Electric Power Co., manhole and cables. Detail of PEPCO cable III

Potomac Electric Power Co., manhole and cables. Detail of PEPCO cable ...

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

Electric Institute of Washington, Potomac Electric Power Co. building. Instrument close-up III

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. commercial kitchens, restaurants and lighting. Balkan Room I

Potomac Electric Power Co. commercial kitchens, restaurants and lighti...

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

Potomac Electric Power Co. electric appliances. Close-up of lamp

Potomac Electric Power Co. electric appliances. Close-up of lamp

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Potomac Electric Power Co. electric appliances. Floor lamp II

Potomac Electric Power Co. electric appliances. Floor lamp II

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Potomac Electric Power Co. model home. Kitchen in model home

Potomac Electric Power Co. model home. Kitchen in model home

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

Potomac Electric Power Co. Building. PEPCO committee on outing II

Potomac Electric Power Co. Building. PEPCO committee on outing II

Picryl description: Public domain photograph group portrait, free to use, no copyright restrictions.

Potomac Electric Power Co. houses. Kramer house on Westover II

Potomac Electric Power Co. houses. Kramer house on Westover II

Public domain photograph of a house, cottage, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. houses. Seitz house on Barker St.

Potomac Electric Power Co. houses. Seitz house on Barker St.

Picryl description: Public domain image of a small palace, chateau, villa, residential historic building, free to use, no copyright restrictions image.

Potomac Electric Power Co. Building. Christmas 1939, Potomac Electric Power Co. interior I

Potomac Electric Power Co. Building. Christmas 1939, Potomac Electric ...

Picryl description: Public domain image of a department store, commercial building, downtown, shopping center, 19th-20th century, free to use, no copyright restrictions.

Electric Institute of Washington, Potomac Electric Power Co. building. Appliances display, Electric Institute I

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. Range display, first floor IV

Electric Institute of Washington, Potomac Electric Power Co. Range dis...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. building. Window I

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. Windows with range display at Potomac Electric Power Co. Building I

Electric Institute of Washington, Potomac Electric Power Co. Windows w...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. Scenes at Electric Institute meeting II

Electric Institute of Washington, Potomac Electric Power Co. Scenes at...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. building. Showroom interior of ranges II

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. building. Refrigerator display II

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. building. Burner displays I

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of department store, free to use, no copyright restrictions image - Picryl description

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

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

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

Electric Institute of Washington, Potomac Electric Power Co. building. Restaurateurs exhibit I

Electric Institute of Washington, Potomac Electric Power Co. building....

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

Potomac Electric Power Co. miscellaneous. Trucks and clam shell digger I

Potomac Electric Power Co. miscellaneous. Trucks and clam shell digger...

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

Potomac Electric Power Co. Building. Civil defense air raid insignia

Potomac Electric Power Co. Building. Civil defense air raid insignia

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

Electric Institute of Washington, Potomac Electric Power Co. building. Christmas 1941 at the Electric Institute III

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. building. Refrigerator display IV

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. Building. Aura window, Electric Institute I

Electric Institute of Washington, Potomac Electric Power Co. Building....

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 no. 38 window display: Cooperate I

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, 1942 exhibit I

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

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

Electric Institute of Washington, Potomac Electric Power Co. building. Display promoting Electric Institute members

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington, Potomac Electric Power Co. building. Display stressing importance of keeping appliances in good order and information on air raid evacuation procedures

Electric Institute of Washington, Potomac Electric Power Co. building....

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Potomac Electric Power Co. substations. Substation no. 38 window display: Are you doing your part?

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. miscellaneous. Fire sprays and fire fighting equipment VI

Potomac Electric Power Co. miscellaneous. Fire sprays and fire fightin...

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

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