[Phil Bulla at Crystal Clear Sound], photograph, 2009; (https://texashistory.unt.edu/ark:/67531/metadc1981548/m1/1/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Phil Bulla at Crystal Clear Sound], photograph, 2009; (https://texashistory.unt.edu/ark:/67531/metadc1981548/m1/1/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .