Smallpox
Prevention of infection.
 

How to make money in real estate
You wont lose your shirt if you follow this case.
 

Canker sores
There is information in this book on how to avoid the infection (there is no cure).
 

How to lose weight
There is only one way to lose weight.
(don't waste you money on other books)
 

 T Bonds are very easy to control.
You have to know when to buy and when to sell