Popular electricity magazine in plain English v. 6 May 1913-Apr. 1914
Thomas Edison, Biography, Early Life, Inventions, & Facts
Edison's Electric Pen - Science History Institute Digital Collections
Getting Inked Up? Thank Thomas Edison - IEEE Spectrum
Collection of Historical Scientific Instruments continues to amaze — Harvard Gazette
Edison's Electric Pen
Soundtrack to history: Museum unveils first-ever recording of a musical performance, including the world's first blooper caught on tape – New York Daily News
Watch Edison, American Experience, Official Site
Edison's Electric Pen
Inventions