E. Goebel, P. Hilpman, D. Beene, and R. Noever, “Oil and Gas Developments in Kansas During 1961”, kgsbulletin, no. 160, pp. 1–231, Jan. 1962, Accessed: Jul. 22, 2024. [Online]. Available: https://journals.ku.edu/kgsbulletin/article/view/22173