File:Electrical Laboratory, Polytechnic Institute, Worcester, Mass. 1909 Postcard.png
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![File:Electrical Laboratory, Polytechnic Institute, Worcester, Mass. 1909 Postcard.png](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Electrical_Laboratory%2C_Polytechnic_Institute%2C_Worcester%2C_Mass._1909_Postcard.png/800px-Electrical_Laboratory%2C_Polytechnic_Institute%2C_Worcester%2C_Mass._1909_Postcard.png?20230729201439)
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