Cole, Virgil B., Daniel F. Merriam, and William W. Hambleton. “Activities of the Kansas Basement Rocks Committee in 1963 and Additional Precambrian Wells”. Bulletin (Kansas Geological Survey), no. 170 (April 11, 2024). Accessed January 1, 2026. https://journals.ku.edu/kgsbulletin/article/view/21147.