Here is a final look at Panini's National Treasures Baseball card set. Below are pics of many of the booklet cards. I also provide a listing of all the other scarcities that are available; like the bat knobs, barrels and glove relic pieces. Click this link to see all of my other post on this set.
As for the booklet cards, there are various different parallels available, and it's unlikely I have pics of all them below. So, this is hardly a complete visual checklist. Still, this should provide a good look at whats available. My favorite booklet card is probably the below vertical Corey Seager card.