Rein Holder., patent, February 16, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171197/m1/1/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Rein Holder., patent, February 16, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171197/m1/1/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .