1 Bennett, Stephanie. "Dozens of Arizona's Iconic Cactuses Are Being Illegally Dug Up." Fox News: US, March 6, 2020.
2 Brown, Vanessa. Arizona. New York: The Rosen Publishing Group, Inc., 2006.
3 Derzypolski, Kathleen. It's My State: Arizona. New York: Benchmark Books, 2004.
4 Nicholas, Elizabeth. "The Sunniest Places in the USA That Are Perfect for a Summer Holiday." Culture Trip. August 14, 2020. Accessed: October 30, 2020.
5 "Oklahoma." IMDB. Accessed: October 30, 2020.
6 Rodriguez, Nadine. "Did You Know: Arizona Has the Most Hummingbird Species in the US." KJAZZ, January 22, 2016. Accessed: December 28, 2020.
7 Saguaro Cactus. U.S. National Park Service: Organ Pipe Cactus National Monument. Updated: January 6, 2016. Accessed: October 30, 2020.
8 "The Botched Execution of Eva Dugan, 1930." Historical Crime Detective. (Original publication: Associated Press via The Prescott Evening-Courier, February 21, 1930, pages 1 & 4.) Accessed: December 28, 2020.
9 Wolf, David. "Wolf's Den: Get Off the Pot for This Crater." Arizona Daily Sun, November 5, 2013. Accessed: March 17, 2021.