Postcards from the RoadWalker Evans said in his 1958 introduction to Robert Frank's The Americans, "For the thousandth time, it must be said that pictures speak for themselves, wordlessly, visually, or they fail." The imagesrevolutionized postwar American photography. With their candid images of men and women from all classes and walks of life, the photographs presented a very different story than that portrayed by the wholesome caricature of midcentury prosperity pervading