[Final Opinion of Title Related to the Oil and Gas Lease From E. P. Farrar and Myrtis Farrar to Indian Territory Illuminating Oil Company], legal document, August 30, 1940; (https://texashistory.unt.edu/ark:/67531/metapth1156569/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .