The Label Book shows you how to use the Wall Maps and Time Line and contains all the labels for the first 104 lessons. (Labels for later lessons may be found here.) The Label Book makes it easy to find and remove the labels you need. It also contains keys so you will always know where to place each label. Labels are made of full-color, sturdy card stock and may be placed on the Wall Maps and Time Line with reusable adhesive putty such as HandiTAK™.