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Gain a lifetime of experience from the inventor of test marketing and coupon sampling -- Claude C. Hopkins. Here, you'll get two landmark works in one easy-to-carry volume and discover his fixed principles and basic fundamentals that still prevail today.
335 pages, Kindle Edition
First published January 1, 1923
The best school I know is canvassing, going from home to home. Many great ad-writers spend half their time in that. They learn by personal contacts what wins and what repulses. Then they apply their findings to appeals in print.