Mustangs and Cow Horses, book, 1940; (https://texashistory.unt.edu/ark:/67531/metadc67653/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Mustangs and Cow Horses, book, 1940; (https://texashistory.unt.edu/ark:/67531/metadc67653/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .