1887				‘A stock of every conceivable material’
1887				War of Currents
1886	Feb	24		Second Marriage
1886				Wedding gift to Mina
1884	Aug	9		Mary passes away
1880	Dec	17		Edison Electric Illuminating Company
1879				The electric bulb
1878	Oct	14		Electric bulb litigation
1878	Mar			Carbon microphone litigation
1877				Wizard of Menlo Park