Suyker, Hector. [Letter from Hector Suyker to Emma Riecke - December 28, 1918], letter, December 28, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1425783/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .