[Letter from Gertrude Osterhout to Junia Roberts Osterhout, April 29, 1881], letter, April 29, 1881; (https://texashistory.unt.edu/ark:/67531/metapth244034/m1/1/: accessed April 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .