"Lewis & Clark: Mapping the West." Lewis & Clark: Mapping the West. N.p., n.d. Web. 12 May 2013.
<http://www.mnh.si.edu/education/lc/lcmapping/index.html?page=empty_space.html>.
Meriwether, Lewis. "By the Mails." Democrat July 24, 1805:section 1
"NebraskaStudies.Org." NebraskaStudies.Org. N.p., n.d. Web. 12 May 2013.
<http://www.nebraskastudies.org/0400/frameset_reset.html>.
"Scientific Encounters." Lewis and Clark Expedition. N.p., n.d. Web.
<http://www.nps.gov/nr/travel/lewisandclark/encounters.htm>.
"The Impact of Lewis & Clark's Discoveries." The Impact of Lewis & Clark's Discoveries. N.p., n.d. Web. 12
May 2013. <http://www.nebraskastudies.org/0400/stories/0401_0108.html>.
"The Journals of Lewis and Clarkby Meriwether Lewis and William Clark." August 23, 1804. N.p., n.d. Web.
13 May 2013. <http://www.factmonster.com/t/hist/lewis-clark-journal/day102.html>.
"The Journals of Lewis and Clarkby Meriwether Lewis and William Clark." July 27, 1806. N.p., n.d. Web. 13
May 2013. <http://www.factmonster.com/t/hist/lewis-clark-journal/day805.html>.
"The Thomas Jefferson Papers." Thomas Jefferson to Meriwether Lewis, June 20, 1803, Instructions. N.p.,
n.d. Web. 12 May 2013. <http://memory.loc.gov/cgi-bin/query/r?ammem/mtj:@field(DOCID
@lit(je00048))>.
Wexler, Sanford. Westward Expansion: An Eyewitness History. New York: Facts on File, 1991. Print.