Osterhout, Gertrude. [Letter from Gertrude Osterhout to Paul Osterhout, January 6, 1886], letter, January 6, 1886; (https://texashistory.unt.edu/ark:/67531/metapth243978/m1/1/: accessed November 20, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .