Saulsbery, Sandra. [Letter from Sandra Sautsbery to the Dallas Police Department, March 6, 1964], legal document, March 6, 1964; (https://texashistory.unt.edu/ark:/67531/metapth337871/m1/1/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .