This begs the question about protecting books. I buy those clear page protectors that you can get at office supply stores and fully seal the books with them. They are acid free and archival safe, plus I use acid free clear scotch tape to seal them for good measure. I have heard that it is good to have the books breathe, but am not sure about that (and know that comic books go in those mylar "bags" with the board (which may or may not be acid free...) My books are sealed nearly airtight and fully protected against the elements (or if I had a minor leak, not submerged, mind you). I know that once they are in the plastic, they are safe, but when I want to read them, it only takes a few seconds to get them out. Counting the little magazines that I have and all of the other non-Buk items, I probably have sealed 5,000 books this way, so if I'm doing something wrong, I'm pretty fucked.
I noticed on ROC beautiful books that it looks like they are sitting naked on the shelf (although that may be the picture).
I guess I'm asking any other collectors what they do to protect their books.
Best,
Bill