Osterhout, Gertrude. [Letter from Gertrude Osterhout to Junia Roberts Osterhout, May 29, 1881], letter, May 29, 1881; (https://texashistory.unt.edu/ark:/67531/metapth244037/m1/1/: accessed November 14, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .