12/21/1907 Edison, Thomas Alva to Denton Dunn and Boultbee and Denton, Frank
(Adams Express Co) Research and development; Automobiles and trucks; Electric battery
[LB076]  General Letterbook Series: Letterbook, LB-076 (1907-1908)
[LB076276; TAEM 197:770]
Courtesy of Thomas Edison National Historical Park.
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