Nut-Cracking Machine., patent, November 23, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171401/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Nut-Cracking Machine., patent, November 23, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171401/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .