ANS, in pencil, signed “Edison,” one page, lightly-lined, 5 x 8, dated in another hand 1921. Edison writes to [Jaffrey P.] Buchanan. In full, “I suppose you have handy water hose all over grinding plant & across street to put out fires. Remember that should the powder burst into flame it will travel through the whole system instantly.” In fine condition, with light even toning, a bit of soiling, and a bisecting vertical fold. R&R COA.
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