9 May 2018.                                                                                                                  WYOMING. Photography. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/138_1104940/1/138_1104940/cite. Accessed 10 May 2018.

“BrainPOP.” BrainPOP, www.brainpop.com/

natgeo.galegroup.com/natgeo/archive?p=NGMK&u=va_s_053_2070

UTAH. Photography. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/138_1100822/1/138_1100822/cite. Accessed 10 May 2018.

IDAHO. Photography. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/138_1114247/1/138_1114247/cite. Accessed 14 May 2018.

Montana.. Photography. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/137_3069924/1/137_3069924/cite. Accessed 14 May 2018.

NEVADA.. Photography. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/137_3157350/1/137_3157350/cite. Accessed

Banks, James A. Macmillan/McGraw-Hill Social Studies. MacMillan/McGraw-Hill, 2005.

Yellowstone National Park. Photography. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/139_1935961/1/139_1935961/cite. AMarch 1866 a battle was fought in this vicinity between the Shoshone-Bannock and the Crow Indians over hunting grounds in the Wind River basin. Victorious Shoshone Chief Wahsakie displayed a Crow Indian’s heart on his lance at the war dance after battle.. Photograph. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/110_515892/1/110_515892/cite. Accessed 25 May 2018accessed 21 May 2018.

“Oregon.” Britannica School, Encyclopædia Britannica, 9 Apr. 2018. school.eb.com/levels/elementary/article/Oregon/345515. Accessed 22 May. 2018.

Rocky Mountains. Photo. Britannica ImageQuest, Encyclopædia Britannica, 25 May 2016.
quest.eb.com/search/167_4045493/1/167_4045493/cite. Accessed 24 May 2018.