Walker Evans is one of the most influential artists of the twentieth century. A pioneer in American documentary photography, Evans had the extraordinary ability to see the present as if it were already the past, and to translate that knowledge and historically inflected vision into an enduring art. His principal subject was the vernacular—the indigenous expressions of a people found in roadside stands, cheap cafés, advertisements, simple bedrooms, and small-town main streets. For fifty years, from the late 1920s to the early 1970s, Evans recorded the American scene with the nuance of a poet and the precision of a surgeon, creating a visual catalogue and archive of modern America in the making. In 1973, Evans began to work with the innovative Polaroid SX-70 camera and an unlimited supply of film from its manufacturer. The virtues of the camera fit perfectly with his search for a concise yet poetic vision of the world: its instant prints were, for the infirm seventy-year-old photographer, what scissors and cut paper were for the aging Matisse. The unique SX-70 prints are the artist’s last photographs, the culmination of half a century of work in photography. With the new camera, Evans returned to several of his enduring themes—among the most important of which are signs, posters, and their ultimate reduction, the letter forms themselves.