Elisha Gray/ Alexander Bell
Forbes article – http://www.forbes.com/sites/johngreathouse/2012/06/07/few-entrepreneurs-are-both-inventors-and-innovators-which-are-you/
Washington Post – http://www.washingtonpost.com/wp-dyn/content/article/2008/02/19/AR2008021902596.html
Alexander Bell Wikipedia – http://en.wikipedia.org/wiki/Alexander_Graham_Bell
Gary Kildall/ Bill Gates
PBS – http://www.pbs.org/wgbh/theymadeamerica/whomade/kildall_hi.html
Forbes – http://www.forbes.com/forbes/1997/0707/6001336a.html
Bloomberg Businessweek – http://www.businessweek.com/stories/2004-10-24/the-man-who-could-have-been-bill-gates
Karl Benz and Henry Ford
Karl Benz Wikipedia – http://en.wikipedia.org/wiki/Karl_Benz#Benz_S.C3.B6hne_.281906.E2.80.931923.29
LOC – http://www.loc.gov/rr/scitech/mysteries/auto.html
Chatafrik – http://chatafrik.com/articles/poetry/item/812-henry-ford-and-karl-benz-men-of-ideas.html#.U4LkEfldV8E
Nikola Tesla and Thomas Edison
Oatmeal – http://theoatmeal.com/comics/tesla
Forbes – http://www.forbes.com/sites/alexknapp/2012/05/18/nikola-tesla-wasnt-god-and-thomas-edison-wasnt-the-devil/
Mentalfloss – http://mentalfloss.com/article/30140/acdc-tesla%E2%80%93edison-feud
Lifehack – http://www.lifehack.org/articles/productivity/thomas-edison-versus-nikola-tesla-who-is-more-productive.html
The Ugly Truth
Forbes – http://www.forbes.com/sites/johngreathouse/2012/06/07/few-entrepreneurs-are-both-inventors-and-innovators-which-are-you/
Inventors or Innovators? 