Join us as we chat with the Smithsonian’s National Post Museum curator, Lynn Heidelbaugh, to examine one of the biggest game changers in the modernization of the Postal Service—the ZIP Code. We’ll talk about how a seemingly innocuous string of digits helped to increase delivery performance, as well as how USPS inspired nationwide adoption of the ZIP Code, including the introduction of Mr. ZIP! Hear how the ZIP Code was promoted, the reception it received from the public and mailing industry. Our hosts Dale Parsan and Yasmine Di Giulio go deep into the ZIP Code with Lynn Heidelbaugh on this episode of Mailin' It!