Everything at dtic.mil is interesting.
Here is the main page where you can search on anything from the mach 10 sprint missile to the hibex upstage missile that maneuvered at 300G lateral acceleration to the entire story on chernobyl............to super old airplane tech.
"chernobyl notebook" will net you the first link which is the entire book written by an insider on the events of the chernobyl excursion/explosion and the days after.
Amazing stuff on airfiol design..........landing gear drag....etc.