[Venomous Gila Monster], postcard, 1910/1920; (https://texashistory.unt.edu/ark:/67531/metapth188044/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Venomous Gila Monster], postcard, 1910/1920; (https://texashistory.unt.edu/ark:/67531/metapth188044/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .