[Portrait of an Unknown Boy and Girl], photograph, 1878/1909; (https://texashistory.unt.edu/ark:/67531/metapth128966/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Portrait of an Unknown Boy and Girl], photograph, 1878/1909; (https://texashistory.unt.edu/ark:/67531/metapth128966/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .