Instrument Flying: Technique in Weather, book, January 1, 1944; (https://texashistory.unt.edu/ark:/67531/metapth873973/m1/34/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Instrument Flying: Technique in Weather, book, January 1, 1944; (https://texashistory.unt.edu/ark:/67531/metapth873973/m1/34/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .