This is how the trading stamp deal works. It takes 1,200 Green Stamps to fill a book. When you have enough books filled, you exchange them for merchandise you pick out in a catalog. There is an S & H Green Stamps Redemption Center in the PLAZA SQUARE mall. It's down by Chess King.
Photo from http://barbarah.files.wordpress.com/2008/08/s-and-h-green-stamps.jpg