1881 [Supplied year] Edison, Thomas Alva -- Technical Notes and Drawings
(Batchelor, Charles) Incandescent lamp; Vacuum and glass bulb; Miscellaneous electrical technologies; Chemicals, chemical products, and chemical processes
[X001G2]  Henry Ford Museum and Greenfield Village Research Center, Dearborn, Mich.: Edison Papers and Related Items -- Series II: Thomas Alva Edison Notes, Drawings and Sketchbooks -- Unbound Notes and Drawings
[X001G2BA; TAEM 0:0]
Courtesy of the Henry Ford Museum and Greenfield Village Research Center.