Each girl's is personalized with her own name, and they will color them in. (In fact they are busy coloring at the moment!) I used photoshop to do the family picture to represent the present day. These pictures usually look great when colored with colored pencil, as the shading gives it a nice effect–even when the artists are quite young.
The very simplified timeline is for the back cover of the notebook. (The notebooks have the clear pockets on the outside that allows a page to be slid in to decorate the covers.)