This folder contains correspondence and other documents concerning Edison's battery-powered safety lamp. The two items for 1917 relate to Edison's hope to sell his mining lamps to the Japanese firm of Mitsui & Co. for use in their Chinese coal mines. The correspondents are Harrison G. Thompson, general sales manager of the Edison Storage Battery Co.; William H. Meadowcroft, Edison's personal assistant; and Walter Stevens, manager of the Export Division of Thomas A. Edison, Inc.

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