Not sure if anyone remembers, but a few of us got some custom mylar sleeves made for the posters back in 2000 or so. They were a pain to get them in without damaging them, but once they're in, the slightly rigid edges protect them from bending, whereas the Itoya books (which I don't remember being around at that time, or at least not in that size) could still cause damage if someone folds the pages or stores it upside down, etc. I like those Itoya books, though. I would have definitely bought one for the posters if they'd had them then. I don't remember how many of these custom sleeves we ordered. Might have been only 100 total (a few of us went in on them if I remember right). Always had a soft spot for the posters, especially the LARGE-size yellow pack versions. Still have my complete set of those, including my "Creepios". (Bonus points for anyone who knows why I misspelled that on purpose).