Book Collecting

basically created this thread as I have some hardcovers and I want to protect the covers. Does anyone use any specific hardcover protection sleeves for the dust jackets?
 
My wife is into this and just told me she found a 50's edition of Joy of Cooking. She loves to cook so this was a cool find for her. Got her some eds of Dr. Doolittle from the bay the other day and of Pooh....for our eventual 'digital(baby)' of course ;)