Created a semi-automatic key to help prevent the development of telegrapher paralysis, created by the daily abuse of manipulating a manual machine key. Page includes history of the man and the spread of this invention across the United States. http://www.telegraph-history.org/horace-g-martin/
Features backgrounds of early entrepreneurs from early Egyptians, Leonardo da Vinci to modern United Kingdom personalities, such as Alfred Herbert and Axel Wickman. http://www.pioneers.historians.co.uk/
Features transcriptions of diary entries that pertain to the making of his invention, the Shay locamotive engine. Page includes related resource links. http://www.ephraimshay.com/