BOSTON, MA.- Printed in Chicago between 1923 and 1929, Mather Work Incentive posters were designed to improve worker productivity and curb turnover during a time of economic expansion and plentiful jobs. The traditional American virtues the posters promote are as relevant today as they were 80 years ago and represent a unique chapter in American advertising and economic history. While the posters can be seen as workplace propaganda or camp Americana, they are perhaps most importantly viewed as a visual expression of the idealism and optimism of the rising nation. President Calvin Coolidge pithily summed up in two sentences the ideology of the era in his 1925 speech to the society of American newspaper editors: “The chief business of the American people is business…The chief ideal