Improvement in Rotary Engines., patent, June 5, 1866; (https://texashistory.unt.edu/ark:/67531/metapth165125/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Improvement in Rotary Engines., patent, June 5, 1866; (https://texashistory.unt.edu/ark:/67531/metapth165125/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .