Dallas County (Tex.). Dallas County Probate Case 321: Keifer, Benj. (Deceased), legal document, 1850-02-11/1857-03-01; (https://texashistory.unt.edu/ark:/67531/metapth600846/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .