05/19/1926 [Supplied year, month, and day] Edison, Thomas Alva to Hunter, Charles Francis
Testing and quality control; Chemicals, chemical products, and chemical processes [Cover Document and Attachment]
[CM10]  Special Collections Series -- Chemical Production Records -- Edison Chemical Works: C. F. Hunter Papers (1914-1926)
[CM10CA; TAEM 281:683]
Courtesy of Thomas Edison National Historical Park.
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