Coba jelasin Daftar pustaka dari Johnny Eck dong

American Sideshow: An Encyclopedia of History's Most Wondrous and Curiously Strange Performers (Tarcher/Penguin, 2005) by Marc Hartzman. Johnny Eck and his twin brother are featured on the cover.

Skal, David J. The Monster Show, pages 145-6. Second edition, 2002. Faber And Faber, New York.

Raymond, Warren A. (2014) The Johnny Eck Photo Album First Edition, Wolf's Head Press, Silver Spring, MD. ASIN B00MJ8QTUG.