"The 10 percent Secret making an extra ten percent pay one-hundred percent" by Loren Dunton - 1969. This book turns out to be about all aspects of Financial Planning sales efforts to increase business. It discusses direct sales, commissions, talent, supplying executives, selling in the financial industry, selling as a science, selling the benefits (not the features), closing sales, attitude, technique and also the 10% secret, which straightforward. Improve your sales 10% per year and like ...