Thomas Edison died of coplications of diabetes on October 18, 1931, in his home, Glenmont in Llewellyn Park in West Orange, New Jersey, which he had purchased in 1886 as a wedding gift for Mina. He is buried behind the home.Mina died in 1947. Edisons last breath is reportedly contained in a test tube at the Henry Ford Museum. Ford reportedly convinced Charles Edison to seal a test tube of air in the inventors room shortly after his death, as a memento. A plaster death mask was also made.