Direct Mail Hall of Fame Author:American Writer's Institute 25 Exemplary Sales Letters. Do we want the most 'successful' letters of all time, the ones that brought in the most money? Or do we want the ones that were the most innovative, that broke new ground...shook things up...introduced new ideas and techniques? — This book includes extremely successful letters, old and new, that were both very successf... more »ul and reflected principles of direct marketing.« less