Dillahunty, Paul & Sayles, McAlpine (Mac). [Memorandum Between Mac Sayles and Paul Dillahunty], legal document, April 7, 1910; (https://texashistory.unt.edu/ark:/67531/metapth1156060/m1/1/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .