Not a survival movie per se, but I just re-watched "Atomic Cafe." This compilation of training films, newsreels and archival footage is amazing to watch now for several reasons. The palpable immediacy of the threat that comes through in the civil defense messages, the various government and military agencies putting a harmless spin on the consquences of nuclear detonations, and some of the shown preparations that are comical in their naivete. Check out the 2 girls with the food storage demo - priceless. Everyone was a survivalist then.
The film has a political agenda to be sure, but there is no commentary outside of the archival footage and the clips are interesting in their own right.
I first saw this movie when it came out in 1982 with my wife (then girlfriend). I was living in Berlin and the cold war was very much on. Next to Peter Kuran's excellent documentary series, this movie contains some of the most interesting collection of footage for those interested in nuclear history.