The DPS Museum Exhibit Team was going through our archives and found an excellent history of the early days of DPS written by an historian as part of a thesis for the University of Texas. You can read it by going to the following link here. If the link does not open for you in your browser, try pasting the direct link: https://drive.google.com/file/d/1AZUpPMIxd2qC-1de4uDpcB71KUbQ8w6-/view?usp=sharing