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transformerDevice
Scan of a glass lantern slide showing a switchrack with transformers at an electric utility transformer station. Location unidentified, but somewhere in the Rocky Mountain regio
Scan of a glass plate negative showing a motor room in an electric utility facility located somewher...
Scan of a glass plate negative, showing a junction of electric transmission lines, located somewhere...
Scan of a glass lantern slide with caption: "Pioneer Station Switchrack. G.E. KO26 44 kv. Oil switch...
Scan of a glass lantern slide showing a switchrack with transformers at an electric utility transfor...
Scan of a glass lantern slide, showing a switchyard or substation with transformers in winter, somew...
Scan of a glass lantern slide showing an electric "switchyard" or substation. Location unidentified,...
Scan of a glass lantern slide showing an unidentified power station, somewhere in the Rocky Mountain...
Scan of a glass lantern slide showing the interior of an electric power plant, with generator. Loca...
Scan of a glass lantern slide showing the interior of an electric power plant with five generators. ...
Scan of a glass lantern slide showing electric transmission lines on poles crossing a valley landsca...
Scan of a glass lantern slide showing power lines on poles, strung across an open landscape, probabl...
Scan of a glass lantern slide showing a view of a power generating station (location unidentified
Scan of a glass lantern slide showing an electric power station with three stacks. Location unident...
Scan of a glass lantern slide showing an electric power generator, probably used in an unidentified ...
Scan of a glass lantern slide showing the interior of a power generating station, possibly Olmsted h...
Scan of a glass plate negative showing a motor room in an electric utility facility located somewher...
Scan of a glass plate negative, showing a junction of electric transmission lines, located somewhere...
Scan of a glass lantern slide with caption: "Pioneer Station Switchrack. G.E. KO26 44 kv. Oil switch...
Scan of a glass lantern slide showing a switchrack with transformers at an electric utility transfor...
Scan of a glass lantern slide, showing a switchyard or substation with transformers in winter, somew...
Scan of a glass lantern slide showing an electric "switchyard" or substation. Location unidentified,...
Scan of a glass lantern slide showing an unidentified power station, somewhere in the Rocky Mountain...
Scan of a glass lantern slide showing the interior of an electric power plant, with generator. Loca...
Scan of a glass lantern slide showing the interior of an electric power plant with five generators. ...
Scan of a glass lantern slide showing electric transmission lines on poles crossing a valley landsca...
Scan of a glass lantern slide showing power lines on poles, strung across an open landscape, probabl...
Scan of a glass lantern slide showing a view of a power generating station (location unidentified
Scan of a glass lantern slide showing an electric power station with three stacks. Location unident...
Scan of a glass lantern slide showing an electric power generator, probably used in an unidentified ...
Scan of a glass lantern slide showing the interior of a power generating station, possibly Olmsted h...
Scan of a glass plate negative showing a motor room in an electric utility facility located somewher...
Scan of a glass plate negative, showing a junction of electric transmission lines, located somewhere...
Scan of a glass lantern slide with caption: "Pioneer Station Switchrack. G.E. KO26 44 kv. Oil switch...
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