A letter from Thomas Edison to Malcolm MacLaren of Princeton dated 5 January 1916, describing a dynamo, catalog number 315800. Transcription: "Referring to our recent correspondence in regard to the ...
An Edison Z-type generator of bi-polar construction, rated for 60 sixteen-candlepower incandescent lamps (52 amps at 110 volts), made about 1881. Markings: "D18" on top block; metal tag: "4E-107"; "No ...
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