This is a completly thorough book on every type of US Savings Bonds with good advice on how to purchase them, when to purchase them, and when to redeem them as well as how to redeem them. It has good structural content, with easy to follow guidelines. It also contains addresses to send to for more information. Like any book in this field, by the time an author has it published, it has some obsolete material, but I must say I still found it very useful. The reason for my most current purchase is that I have purchesed two other copies and have given them each away as gifts.