Mustangs and Cow Horses, book, 1940; (https://digital.library.unt.edu/ark:/67531/metadc67653/m1/1/: accessed May 7, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Mustangs and Cow Horses, book, 1940; (https://digital.library.unt.edu/ark:/67531/metadc67653/m1/1/: accessed May 7, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .