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Potomac Electric Power Co. air conditioning and lighting. S & W cafeteria

Potomac Electric Power Co. electric appliances. Draining kettle into sink

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

Potomac Electric Power Co. air conditioning and lighting. Hill residence, living room

Potomac Electric Power Co. substations. Interior of substation at 18th and G. St. N.W.

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

Potomac Electric Power Co. electric appliances. Floor lamp

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

Electric Institute of Washington, Potomac Electric Power Co. Building. Cost of operation II

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

Potomac Electric Power Co. electric appliances. Test tubes showing cooking losses at different cooking temperatures II

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

Potomac Electric Power Co. electric appliances. Mrs. Coombs picnic party I

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

Potomac Electric Power Co. electric appliances. Electric kitchen

Electric Institute of Washington, Potomac Electric Power Co. Building. Better light for better sight display

Electric Institute of Washington, Potomac Electric Power Co. Building. Targeting safety I

Potomac Electric Power Co. Board grid with layout of power flow II

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

Potomac Electric Power Co. miscellaneous. Copy of portrait of G. Archer

Potomac Electric Power Co. Board grid with layout of power flow III

Electric Institute of Washington, Potomac Electric Power Co. Building. Close-up of stove burner controls

Potomac Electric Power Co. air conditioning and lighting. Loew's Fox Theatre II

Potomac Electric Power Co. electric appliances. Model preparing breakfast

Potomac Electric Power Co. electric appliances. Smiling model baking bread II

Potomac Electric Power Co. Benning plant. Interior of Benning plant IV

Potomac Electric Power Co. Buzzard Point plant. Buzzard Point plant from across river III

Potomac Electric Power Co. Benning plant. Construction for frequency changer at Benning plant II

Potomac Electric Power Co. Benning plant. Interior of Benning plant I

Electric Institute of Washington, Potomac Electric Power Co. Building. Display with lamps, desk and screen

Potomac Electric Power Co. Building. Model home laundry of Potomac Electric Power Co.

Electric Institute of Washington, Potomac Electric Power Co. Building. Kitchen demonstration, first floor I

Potomac Electric Power Co. apartments and kitchens. Houses at 200 Emerson Street N.W.

Electric Institute of Washington, Potomac Electric Power Co. Building. Kitchen demonstration, first floor II

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

Potomac Electric Power Co. electric appliances. Mrs. Coombs picnic party II

Potomac Electric Power Co. old electric appliances. Stove

Potomac Electric Power Co. Fresco painting at Potomac Electric Power Co. II

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

Electric Institute of Washington, Potomac Electric Power Co. Building. Appliances for convenience, bridal gifts II

Electric Institute of Washington, Potomac Electric Power Co. Building. Extreme close-up of pencil

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

Electric Institute of Washington, Potomac Electric Power Co. Building. Woodward & Lothrop's home oil burner

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

Electric Institute of Washington, Potomac Electric Power Co. Building. Appliances for convenience, bridal gifts I

Potomac Electric Power Co. substations. Takoma substation

Potomac Electric Power Co. electric kitchens. Display of kitchens at Silver Spring Armory

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

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

Potomac Electric Power Co. air conditioning and lighting. G.E. attic fan, Joseph Crowe

Electric Institute of Washington, Potomac Electric Power Co. Building. Vegetables in milk bottles III

Electric Institute of Washington, Potomac Electric Power Co. Building. Close-up of a nail

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

Potomac Electric Power Co. electric appliances. Electrical appliances (six)

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

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

Electric Institute of Washington, Potomac Electric Power Co. Building. Bride and table with gifts in foreground II

Potomac Electric Power Co. Fresco painting at Potomac Electric Power Co. I

Potomac Electric Power Co. air conditioning and lighting. Loew's Fox Theatre I

Potomac Electric Power Co. electric appliances. Norma at electric range II

Potomac Electric Power Co. electric appliances. Food prepared to cook on electric range

Potomac Electric Power Co. electric appliances. Electric range I

Potomac Electric Power Co. electric appliances. Norma at electric range III

Potomac Electric Power Co. Benning plant. Interior of Benning plant II

Potomac Electric Power Co. Buzzard Point plant. Buzzard Point plant from across river I

Potomac Electric Power Co. Buzzard Point plant. Buzzard Point plant from across river IV

Potomac Electric Power Co. Benning plant. Construction for frequency changer at Benning plant V

Potomac Electric Power Co. Benning plant. Construction for frequency changer at Benning plant IV

Potomac Electric Power Co. Buzzard Point plant. Closeups of turbine made for G.E. calendar III

Potomac Electric Power Co. Benning plant. Exterior of Benning plant

Potomac Electric Power Co. electric appliances. Preparing dish of peas

Potomac Electric Power Co. electric appliances. Bases of lamps

Electric Institute of Washington, Potomac Electric Power Co. Building. Griffith Consumers Co. electrol oil burner

Potomac Electric Power Co. electric appliances. Range for semaphore

Potomac Electric Power Co. air conditioning and lighting. Mr. Hamm's office

Electric Institute of Washington, Potomac Electric Power Co. Building. Radio display and map

Potomac Electric Power Co. miscellaneous. PEPCO map

Potomac Electric Power Co. Building. Meter reader cap

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

Potomac Electric Power Co. air conditioning and lighting. Potomac Electric Power Co. basement

Potomac Electric Power Co. old electric appliances. Poster with images of building fronts and caption Can you plead not guilty?

Potomac Electric Power Co. electric appliances. Appliances montage I

Potomac Electric Power Co. old electric appliances. Illustration of kitchen

Potomac Electric Power Co. service station, 10th and Florida. Construction of foundation for new service station building I

Potomac Electric Power Co. electric appliances. Many rows of pies

Potomac Electric Power Co. substations. Powerlines II

Potomac Electric Power Co. electric appliances. Vegetables on scale, 19 lbs.

Potomac Electric Power Co. electric appliances. Wall mounted lamp with hand

Electric Institute of Washington, Potomac Electric Power Co. Building. Liquid being poured into a pot

Potomac Electric Power Co. service station, 10th and Florida. Construction of foundation for new service station building II

Electric Institute of Washington, Potomac Electric Power Co. Building. Targeting safety II

Potomac Electric Power Co. electric appliances. Lamp

Potomac Electric Power Co. miscellaneous. Copy negatives of old PEPCO pictures

Potomac Electric Power Co. electric appliances. Appliances montage II

Potomac Electric Power Co. electric appliances. Working with electric appliances I

Potomac Electric Power Co. electric appliances. Row of pies

Potomac Electric Power Co. electric appliances. Working with electric appliances II

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

Potomac Electric Power Co. electric appliances. Vegetables, meat and milk on table

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