[Aviation Enterprises Limited Operations], book, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth1076375/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Aviation Enterprises Limited Operations], book, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth1076375/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .