We have definitely seen a few movies with this in there, I will have to call on @johngreenfield 's wonderful memory for titles.

I was thinking about the loss of access to knowledge most people would encounter just the other day. We were watching a youtube video about really silly wikihow's - for things that you should have a degree to be doing, like surgery. I immediately thought the most useful time for this would be this sort of post-apocalyptic scenario, but like you say, it would be hard to get to. I am all for the preservation of the printed form, but the availability of information on the internet allows people to expose themselves to vast amounts of knowledge really easily, so maybe we would find there were groups of people who had been able to retain this information for survival purposes. If you don't mind, I may let this inspire a theme for a contest round? Although I do have quite a list to get through.