Hernandez, Toby P. [Letter from Toby P. Hernandez to Eddie Pena - 1979-04-02], letter, April 2, 1979; (https://texashistory.unt.edu/ark:/67531/metapth222419/m1/1/: accessed December 11, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .