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References

 

Boyer, Diane E. and Webb, Robert H., "Damming Grand Canyon: The 1923 USGS Colorado River Expedition" (2007). All USU Press Publications. Book 161.  http://digitalcommons.usu.edu/usupress_pubs/161.

 

"John Wesley Powell born." History.com. A+E Networks, 2009. Web. 3 May 2015

 

"John Wesley Powell". Encyclopædia Britannica. Encyclopædia Britannica Online. Encyclopædia Britannica Inc., 2015. Web. 03 May. 2015

 

"John Wesley Powell: Explorer, Geologist, Geographer." Usgs.gov. N.p., 15 Oct. 2012. Web. 04 May 2015.

 

"John Wesley Powell Life and Biography." John Wesley Powell Biography, Birth Date, Birth Place and Pictures. N.p., 9 Sept. 2010. Web. 04 May 2015

 

"Mapping the Grand Canyon in 1923 - The Birdseye Expedition." The National Map. United States Geological Survey, 15 Jan. 2014. Web. 27 Apr. 2015. <http://nationalmap.gov/grandcanyon/index.html>.

 

Powell, John Wesley. The Exploration of the Colorado River and Its Canyons. New York: Dover Publications, 1961. Print.

 

Ribokas, Bob. "The Powell Expedition." Kaibab.org. N.p., n.d. Web. 03 May 2015.

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