[Postcard from John Patterson Osterhout to Junia Roberts Osterhout, September 10, 1873], postcard, September 10, 1873; (https://texashistory.unt.edu/ark:/67531/metapth255369/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .