Book with cassette holding recess

摘要: Disclosed is a book which, in addition to having pair of covers interconnected along corresponding edges thereof with set leaves therebetween, also has recess defined therein, adjacent one the covers, which opens outside and adapted receive tape cassette, and/or an enclosure for same, or like therein. Preferably, by flat, narrow-edged case piggybacked onto surface cover book, therein into edge cassette.