Abstract: A flexible, transparent plastic book cover has a pocket portion attached to the front cover portion containing various pages or a booklet containing emergency medical information. The book cover is particularly adapted to fit telephone directories of any thickness. The book cover has a front cover section having a pocket to slide over the front cover of a phone book, and a rear cover section having a sleeve for slidably receiving the back cover of a phone directory. The third section, which is hingedly attached to a forward portion of the front cover section and extends rearwardly therefrom, is adapted to mount a booklet containing medical information.