Quartz Mountain Nature Park, photograph, May 20, 1997; (https://gateway.okhistory.org/ark:/67531/metadc1664496/m1/1/: accessed March 8, 2021), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .
Quartz Mountain Nature Park, photograph, May 20, 1997; (https://gateway.okhistory.org/ark:/67531/metadc1664496/m1/1/: accessed March 8, 2021), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .