According to the Smithsonian Institution, the smiley face as we know it today was created by Harvey Ross Ball, an American graphic artist. In 1963, Ball was employed by State Mutual Life Assurance Company of Worcester, Massachusetts (now known as Hanover Insurance) to create a happy face to raise the morale of the employees. Ball created the design in ten minutes and was paid $45 (). His rendition, with a bright yellow background, dark oval eyes, full smile, and creases at the sides of the mouth, was imprinted on more than fifty million buttons and became familiar around the world. The design is so simple that it is certain that similar versions were produced before 1963, including those cited above. However, Ball's rendition, as described here, has become the most iconic version. In 1967, Seattle graphic artist George Tenagi drew his own version at the request of advertising agent, David Stern. Tenagi's design was used in an advertising campaign for Seattle-based University Federal Savings & Loan. The ad campaign was inspired by Lee Adams's lyrics in "Put on a Happy Face" from the musical "Bye Bye Birdie". Stern, the man behind this campaign, also later incorporated the Happy Face in his run for Seattle mayor in 1993.