No one’s shelf of books can ‘stack’ up to your legendary personal library! Packed with page-turning novels, retro recipe books, and rare first editions, your collection is for too special to share without this petite kit of proper cataloguing supplies. Plot an envelope and check-out card in each back cover, and remind your friends when it’s due back with the included date stamp and black ink pad. Complete with a genuine pencil to jot down contact info and coin fines, this collection of timeless equipment by Knock Knock will start a charming new chapter of keeping track!