Jesse and Frank James, with the former being more well-known, were among the most notable of American outlaws of the West, as well as leaders of a gang of American outlaws, named the Jesse James Gang, or James–Younger Gang. Jesse James avoided authorities for an estimated 15 years, in which he 'ran off' with about $200,000 from over 20 robberies from banks or trains.
http://www.historyorb.com/date/1872/april/12
http://www.britannica.com/EBchecked/topic/1353175/Jesse-James-and-Frank-James
http://www.biography.com/people/jesse-james-9352646
http://www.pbs.org/wgbh/americanexperience/features/general-article/james-robberies/