there's one paper that says vietnam, 1965. is there another locked section that has the 60's and 50's etc? i saw in a video a door being opened but it seems i'm the only one who got dealt a bad hand with having a tiny brain that can't solve jack shit

The archives only cover the 70s, and you can't unlock most doors in the game, but (*spoilers ahead*) you can find one key in the archive which opens the basement and triggers the game's ending sequence.

aha right, i see. no problem, thanks for that!