Over the years, I often heard that we would not be able to build a Saturn V again since its construction plans actually have been destroyed.
Then again, I heard that there are copies on microfiche or something, and that the Smithsonian actually has copies of those.
So, are the construction plans still available or not? By this I mean plans that are detailed enough that you would be able to rebuild the Saturn V if you had all the tooling and infrastructure (which we don't, but that's another matter).
(Sidenote: I know we actually wouldn't want to build it again for a variety of reasons. Interestingly, that linked question doesn't seem to touch the topic of the construction plans.)