Link Leveling Drive, technical drawing, October 1966; (https://texashistory.unt.edu/ark:/67531/metapth1637348/m1/1/: accessed June 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Link Leveling Drive, technical drawing, October 1966; (https://texashistory.unt.edu/ark:/67531/metapth1637348/m1/1/: accessed June 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .