[COVID-19 signage at Willis Library book drop], photograph, April 2020; (https://texashistory.unt.edu/ark:/67531/metadc1638690/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[COVID-19 signage at Willis Library book drop], photograph, April 2020; (https://texashistory.unt.edu/ark:/67531/metadc1638690/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .