This book is not written as a personal history, but as a business story. I have tried to avoid trivialities and to confine myself to matters of instructive interest. The chief object behind every episode is to offer helpful suggestions to those who will follow me. And to save them some of the midnight groping which I did. My only claim for credit is that I have probably worked twice as long as anybody else in this field. I have lived for many years in a vortex of advertising. Naturally I learned