http://www.nationalgeographic.com/lewisclark/
http://www.nwlewisclark.com/
http://www.ndtourism.com/secondary/index.asp?choice=Lewis_Clark&source=overture
http://www.pbs.org/lewisandclark/
http://www.lcarchive.org
http://www.nps.gov/lecl/
http://www.lewisnadclark.org
http://
www.lewisandclark200.org
http://www.lewisandclark.net
http://www.mohistory.org
http://www.nps.gov/jeff/LewisClark2/Education/CurriculumGuideMain.htm