Texas Register: 2nd Quarterly Index July 2, 2021, Index of Rules: Pages 29-54, Index of Non-Rulemaking Notices: Pages 55-74, periodical, July 2, 2021; (https://texashistory.unt.edu/ark:/67531/metapth1407506/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .