Dropper for Medicines, patent, January 20, 1903; (https://texashistory.unt.edu/ark:/67531/metapth511140/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Dropper for Medicines, patent, January 20, 1903; (https://texashistory.unt.edu/ark:/67531/metapth511140/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .