: In this letter dated December 30, 1887, Caroline M. Victor asks Mina Miller Edison to urge her husband to fulfill a promise to invent a hearing aid. Thomas Alva Edison answered the letter from Orange, New Jersey in February 1889. His note is in the upper right corner. Edison urges her not to get discouraged since he is working on the problem. The letter is two pages and measures 8.5" x 10.5" (20.96 x 26.67 cm). Edison (1847-1931) was born in Milan, Ohio. He gained fame as an inventor, registering a total of 1,093 patents for such innovations as the incandescent light bulb, the phonograph, and the moving picture camera. As a boy, Edison was boxed in the ears by an angry train conductor after he destroyed a box car when his science experiments exploded. Edison pointed to the incident as the cause of his loss of hearing, which worsened throughout his life. View on Ohio Memory.
: Om1339_1136022_001 Subjects
: Science and Technology; Inventions; Inventors; Hearing aids; Edison, Thomas A. (Thomas Alva), 1847-1931; Edison, Mina Miller, 1865-1947 Places
: Orange (New Jersey); Milan (Ohio); Erie County (Ohio); Akron (Ohio); Summit County (Ohio)