tricky redirect question

So I have an online textbook that’s all pages, no posts and no comments, in a twenty eleven child theme. It was at /wp and I had a guy who was working on it and asked him to move it to the root directory.

It seems like he should have changed some pointer at the server level, but instead he just duplicated the whole WP installation. And since then I’ve been working on this new version, including changing the URL slugs to a simpler structure.

Obviously this was not the right way to do it, and I’m sure you can guess the problem — google and others have the old /wp links and that version of the site is becoming increasingly stale. So I want to take it down in such a way that every old URL redirects to the correct new URL.

Since I’ve changed the slugs a bit, this is not just a matter of removing the /wp/ and probably not even within the bounds of regex. I will just have to type in each redirect URL by hand. Not so bad since there are only about 60 of them. But how do I do it?