The USD alumni newsletters are fast becoming my favorite source for USD history. To be useful, these newsletters need an index or to be in a searchable format unless, like me, you are looking for random and interesting tidbits about USD.
An example of a random and interesting article is “U.S. Naval Weapons Lab likes girls from South Dakota” in University of South Dakota Bulletin, Alumni no. 9, series LXIII, no. 25, October 1, 1963. It highlights women with mathematics degrees from USD who have been hired by the lab. This article reminds me of Rise of the Rocket Girls and Hidden Figures, recent fascinating books about women mathematicians in the early U.S. space program.
The alumni newsletters can be found in the Archives and Special Collections.