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| Description: | Workers hand wind filament on transformers at Thordarson Electical Manufacturing Company. Chester Thordarson was a Chicago inventor and manufacturer of el... |
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| Description: | Workers get transformers ready for distribution in the shipping department at Thordarson Electical Manufacturing Company. Chester Thordarson was a Chicago... |
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| Description: | Speed presses stamp out core laminations for transformers at Thordarson Electical Manufacturing Company. Chester Thordarson was a Chicago inventor and man... |
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| Description: | The general press room is where sheet metal is made into housing for transformers, and fibre and bakelite insulators are formed at Thordarson Electical Man... |
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| Description: | Workers construct a 1,000,000 volt coil at Thordarson Electical Manufacturing Company. |
| Date: | 1905 |
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| Description: | A group of men sit at desks and listen to J. Newman from Deering Works give a lecture on electricity. |
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