Ray Giles, the author of ""Catching Up with the Billion Dollar High School Market,"" is a partner in The Blackman Company, one of New York's leading advertising agencies. During his fifteen years of agency experience he has worked with many of America's largest manufacturers in formulating advertising and other sales promotion measures for their products. He has shown a keen interest in advertising designed to reach the more youthful type of consumer. Articles by Mr. Giles have appeared in the Saturday Evening Post, Colliers', Literary Digest, Advertising & Selling, Printers? Ink, and in other publications both here and abroad. He is also author of three business books - ""500 Answers to Sales Objections"" (Ronald Press) ""Breaking through Competition"" (Appleton) and ""Developing and Managing Salesmen"" (Ronald Press).