Twenty PAPERBACK books inside a box. Classic Dr Seuss, you will love this collection. I think sometimes Amazon lists as hardcover a set that comes inside a box like this one. I believe the actual books are paperback. They are 20 books and the titles are: Titles included in this collection The Cat in the Hat Green Eggs and Ham Oh The Places you'll Go! One Fish two Fish Red Fish Blue Fish Fox in Socks The Cat in the Hat Comes Back Hop on Pop Dr. Seuss' ABC Ten Apples Up On Top I Can Read With My Eyes Shut I Wish I Had Duck Feet Wacky Wednesday Mr Brown Can Moo! Can You? There's A Wocket In My Pocket The Sneetches and Other Stories The Lorax Dr Seuss's Sleep Book Horton Hears A Who! Yertle The Turtle and Other Stories Scrambled Eggs Super Fox in sock

This set also includes 3 music books in cd format for each of the books provided