E.W. Marland Mansion, photograph, August 1992; (https://gateway.okhistory.org/ark:/67531/metadc1688697/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .
E.W. Marland Mansion, photograph, August 1992; (https://gateway.okhistory.org/ark:/67531/metadc1688697/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .