Dallas County (Tex.). Dallas County Probate Case 1240: Cumby, Wm. (Deceased), legal document, 1871-04-21/1891-01-23; (https://texashistory.unt.edu/ark:/67531/metapth587199/m1/3/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .