Hardback and softcover editions have been published. Some publishers publish paperback originals if slow hardback sales are anticipated. There was both a hardback () and a trade paperback edition (). Xlibris is a printing and distribution service that produces hardback and paperback books. It was published by Methuen in both hardback and paperback. It may be in hardback or paperback form. These two books have dominated the best seller lists in both hardback and paperback. The entire deluxe edition is housed in a 100-page hardback book filled with exclusive content. The first hardback collected edition appeared in 1931. The trade was also printed as a hardback (without dustjacket) by Graphitti Designs. The first edition hardback includes a bonus DVD with a 90-minute interview. The covers of modern hardback books are made of thick cardboard. A further limited print run of 300 hardback copies was printed in 2007. It contains the original CD and DVD-A packaged in a hardback book. Riverhead Books published "The Kite Runner", ordering an initial printing of 50,000 copies in hardback.