Surveyor's Instrument., patent, March 10, 1885; (https://texashistory.unt.edu/ark:/67531/metapth170920/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Surveyor's Instrument., patent, March 10, 1885; (https://texashistory.unt.edu/ark:/67531/metapth170920/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .