Soil Conservation Association, photograph, November 28, 1938; (https://gateway.okhistory.org/ark:/67531/metadc1772156/m1/1/: accessed May 31, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .
Soil Conservation Association, photograph, November 28, 1938; (https://gateway.okhistory.org/ark:/67531/metadc1772156/m1/1/: accessed May 31, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .