Coop or Crate., patent, January 12, 1909; (https://texashistory.unt.edu/ark:/67531/metapth509466/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Coop or Crate., patent, January 12, 1909; (https://texashistory.unt.edu/ark:/67531/metapth509466/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .