Cluster, George A. "Indian Wars: The Battle of Washita, 1868." The Gilder Lehrman Institute of American History. Gilder Lehderman Institute, 21 July 2013. Web. 22 Mar. 2017.
https://en.wikipedia.org/wiki/World_War_I
https://www.theworldwar.org/explore/interactive-wwi-timeline?gclid=CIaasKquwtMCFZyKswodx2YPyw
http://www.history.com/topics/world-war-i/world-war-i-history
https://en.wikipedia.org/wiki/World_War_I
https://www.theworldwar.org/explore/interactive-wwi-timeline?gclid=CIaasKquwtMCFZyKswodx2YPyw
http://www.history.com/topics/world-war-i/world-war-i-history