01/17/1879 New York Herald -- Clippings
"Edison Still Hard at Work in His Laboratory--His Latest Developments Concerning the Light", New York Herald
[MBSB2]  Special Collections Series -- Charles Batchelor Collection -- Scrapbooks: Cat. 1241 (1878-1881)
[MBSB21105b; TAEM 94:451]
Courtesy of Thomas Edison National Historical Park.