I posted a little while back about some WPA posters specific to the National Parks. I just found out that a massive collection of posters was digitized and available for browsing on the Library of Congress website. During the 30's the WPA was the largest employer in the country, supplying almost 8 million jobs. Created by the New Deal it was responsible for projects that involved rebuilding and improving public buildings and roads, supplying food and clothing to the poor, and promoting campaigns in drama, literacy, and the arts. Hundreds of posters were commissioned with subjects from community events and travel, to health and safety.