1. A talking book comprising front and back covers and a plurality of individual leaves therebetween, said covers and said leaves containing literal and graphic indicia thereon describing and illustrating at least one character, object or event, at least one sound source removably attached to said book for producing sound corresponding to at least a selected one of said character, object and event illustrated and described in said book, said sound source comprising means operative for producing said sound both when attached to and detached frown said book, said sound source including at least one switch means thereon for causing the production of sound in response to actuation of said switch means, said switch means being uniquely labelled to correspond to a selected one of said character, object or event.