[Portrait of Margaret Parker Cox], photograph, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth1628233/m1/1/: accessed June 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Portrait of Margaret Parker Cox], photograph, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth1628233/m1/1/: accessed June 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .