Ice-Cream Freezer, patent, January 20, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172585/m1/1/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Ice-Cream Freezer, patent, January 20, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172585/m1/1/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .