Nickell, Joe. 2005. Secrets of the Sideshows. University Press of Kentucky

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Ringer, Andrea. 2018. "Big Top Labor: Life and Labor in the Circus World." 

https://digitalcommons.memphis.edu/cgi/viewcontent.cgi?article=3070&context=et

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Sims, Martha and Martine Stephens. 2011. Living Folklore: An Introduction to the Study of People and Their Traditions. Project Muse: Utah State University Press. Chapter 5: Performance.
 

Sims, Martha and Martine Stephens. 2011. Living Folklore: An Introduction to the Study of People and Their Traditions. Project Muse: Utah State University Press. Chapter 1: Folklore. 

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Ward, Jacqueline C. 2010. "Bending the gaze: An ethnographic inquiry into contemporary contortion."