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Paul E. Derrick was an influential author and business consultant best known for his works on reducing selling costs in manufacturing. His pioneering books, such as "How To Reduce Selling Costs" and its follow-up editions, provided crucial insights for manufacturers looking to optimize their sales processes. Derrick's approach emphasized the importance of efficiency in selling, which resonated with many businesses seeking to improve their bottom lines during the early 20th century.

Throughout his career, Derrick aimed to educate manufacturers on the significance of cost reduction strategies. His writings combined practical advice with theoretical frameworks, making them accessible and relevant to a wide audience. Although specific biographical details about Derrick remain sparse, his contributions to the field of sales management have left a lasting impact on how manufacturers approach their sales strategies today.