Soviet-Era Nuclear Target Map

Years ago, I was helping a friend do some wiring work at an office in CT, and one of the decorations they had in their office was this vintage map of the US that was labeled like “Primary, Secondary and Tertiary Soviet Nuclear Bomb Targets” (or something like that). My memory of it was that it looked quite official, probably something FEMA had printed up for emergency response personnel or something during the 60s.
However, I’ve never been able to actually find one for myself (and the company in question is long since gone, I’m sure, so going down that path seems like a waste of time). My google-fu on this topic just seems to be completely failing me.
Anyone ever seen something like this? I’d love to get one for my office…