[Portrait of Mary Van den Berge Hill], photograph, 1930~; (https://texashistory.unt.edu/ark:/67531/metapth18668/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Portrait of Mary Van den Berge Hill], photograph, 1930~; (https://texashistory.unt.edu/ark:/67531/metapth18668/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .