And yeah, makes sure if you're keeping books and you think you'll be all smart and box them up tight for safe keeping until a later time in your life --- IT WILL --- (usually) just ruin the books. You will be greeted with a dusty/moldy mess when you un-box them in a few years.
Perhaps its just the South (or Texas), but humidity+books+storage = no good outcome.
I'm sure there's a way to store them safely and with no damage, but I haven't experienced it. :-/
Storage long term is a lot of commitment to do it right.