Pennington, Joseph. [Postcard From Joseph to Mr. and Mrs. Pennington, 1908], postcard, April 21, 1908; (https://texashistory.unt.edu/ark:/67531/metapth907716/m1/1/: accessed June 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .