Grain-Sourer., patent, December 12, 1899; (https://texashistory.unt.edu/ark:/67531/metapth514348/m1/1/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Grain-Sourer., patent, December 12, 1899; (https://texashistory.unt.edu/ark:/67531/metapth514348/m1/1/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .