[Postcard from John Patterson Osterhout to Junia Roberts Osterhout, August 18, 1873], postcard, August 18, 1873; (https://texashistory.unt.edu/ark:/67531/metapth255364/m1/1/: accessed April 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .