Life of John Fitch - http://www.history.rochester.edu/steam/westcott/ The inventor of the steam boat. Full text of thus 1857 publication by Thompson Westcott.
Ephraimshay.com - http://www.ephraimshay.com/ Features transcriptions of diary entries that pertain to the making of his invention, the Shay locamotive engine. Page includes related resource links.
Gorrie's Fridge - http://www.phys.ufl.edu/~ihas/gorrie/fridge.htm An early pioneer in the invention of the artificial manufacture of ice.
Martin, Horace G. - http://www.telegraph-history.org/horace-g-martin/ 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.
Denk, Robert - http://www.benduhn.homepage.t-online.de/denk/summary.html The inventor of the tubeless radio used an unknown solid-state effect, which was never rediscovered.