I've been looking around to see if anyone has made other cold war location maps and found this very nice one showing soviet air defence sites/locations. It also shows all the various AD zones in Russia. Well worth a look if that's your bag.
I would have hated to try and get anywhere near Moscow in a plane back then!
You can download it from here - Cold War KML
Didn't a single engine 2 seater cessna land in red square in 1987, flew by a teenager from west Germany.?
Edit:- Found it on Google. A chap called mathias rust.