Improvement in Tool-Holders for Grinding, patent, May 2, 1876; (https://texashistory.unt.edu/ark:/67531/metapth166543/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Improvement in Tool-Holders for Grinding, patent, May 2, 1876; (https://texashistory.unt.edu/ark:/67531/metapth166543/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .