[NA060AAA], Technical Note, Unknown, Thomas Alva Edison, June 6th, 1899
Chemicals, chemical products, and chemical processes
[NA060-F] Notebook Series -- Notebooks by Edison
https://edisondigital.rutgers.edu/document/NA060AAA
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Archive.org Viewer, Microfilm Series Reel 163