Dynamo-Electric Machine, patent, January 10, 1922; (https://texashistory.unt.edu/ark:/67531/metapth1257372/m1/1/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Dynamo-Electric Machine, patent, January 10, 1922; (https://texashistory.unt.edu/ark:/67531/metapth1257372/m1/1/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .