2nd Dk. Lifting Gear for Armor Hatch to Carpenter Shop (Major Alterations) 3rd Dk., technical drawing, July 29, 1926; (https://texashistory.unt.edu/ark:/67531/metapth887096/m1/1/: accessed June 12, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .