Veatch, J. O. (Jethro Otto); Rogers, R. F.; Beck, M. W. (Miles Walter) & Lewis, H. G. (Henry Guy). Soil survey of San Saba County, Texas, book, 1917; (https://texashistory.unt.edu/ark:/67531/metapth19839/m1/63/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .