Improvement in Machines for Cutting Shingles., patent, July 8, 1879; (https://texashistory.unt.edu/ark:/67531/metapth169855/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Improvement in Machines for Cutting Shingles., patent, July 8, 1879; (https://texashistory.unt.edu/ark:/67531/metapth169855/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .