Report of the Texas Department of Mental Health and Mental Retardation, Volume 2, Number 3, March 1970, periodical, March 1970; (https://texashistory.unt.edu/ark:/67531/metapth1588651/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .