Dear Customer, Customers have trusted Dover Publications to protect their privacy for over sixty years. Whether you've been buying books from us since 1941 or are new to the Dover family, we work to earn your trust every day. We are not in the business of selling information about our customers. We consider this information to be a vital part of our relationship with our customers and we treat it with great care and respect. If you'd like to learn more, please see our detailed privacy policy. We thank you for your interest. We look forward to serving you and welcome any ideas or suggestions you may have on how to serve you better.