06/11/1913 Edison, Thomas Alva to Gulf Pipe Line Co
(Edison Storage Battery Co; Bachman, Robert Abraham) Electric battery; Incandescent lamp; Ore exploration and mining
[LB094]  General Letterbook Series: Letterbook, LB-094 (1913)
[LB094268; TAEM 274:947]
Courtesy of Thomas Edison National Historical Park.
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