Improvement in Tape-Worm Medicines., patent, September 23, 1879; (https://texashistory.unt.edu/ark:/67531/metapth169895/m1/1/: accessed June 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Improvement in Tape-Worm Medicines., patent, September 23, 1879; (https://texashistory.unt.edu/ark:/67531/metapth169895/m1/1/: accessed June 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .