Automatic Rotary Hydraulic Casing-Spear., patent, December 26, 1905; (https://texashistory.unt.edu/ark:/67531/metapth513981/m1/1/: accessed June 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Automatic Rotary Hydraulic Casing-Spear., patent, December 26, 1905; (https://texashistory.unt.edu/ark:/67531/metapth513981/m1/1/: accessed June 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .