Mr. ZIP was based on an original design by Howard Wilcox, son of a letter carrier and a member of the Cunningham and Walsh advertising agency, for use by a New York bank in a bank-by-mail campaign. Wilcox's design was a child-like sketch of a postman delivering a letter. The figure was used only a few times, then filed away. Later, AT&T acquired the design and made it available to the Post Office Department at no cost. ... Miami-based Post Office Department artist Joe Lawrence retained the face but sharpened the limbs and torso and added a mail bag. The new figure, who Lawrence had dubbed Mr. ZIP, was unveiled at a convention of postmasters in October 1962.