Robbers Cave State Park, photograph, November 2005; (https://gateway.okhistory.org/ark:/67531/metadc1668914/m1/1/: accessed April 20, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .
Robbers Cave State Park, photograph, November 2005; (https://gateway.okhistory.org/ark:/67531/metadc1668914/m1/1/: accessed April 20, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .