Bayne, Charles K., Kenneth L. Walters, and Norman D. Plummer. “Geology and Ground-Water Resources of Cloud County, Kansas With a Section on Ceramic Materials”. Bulletin (Kansas Geological Survey), no. 139 (January 1, 1959): 1–144. Accessed December 30, 2025. https://journals.ku.edu/kgsbulletin/article/view/22155.