Cylinder-Grinding Attachment For Lathes, patent, April 6, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1258667/m1/1/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Cylinder-Grinding Attachment For Lathes, patent, April 6, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1258667/m1/1/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .