A railroad track leaves off into the wide open prairie. A hostler cleans the fires with a cigar stub clamped between his teeth and leather gloves to protect his hands. The depot is wood paneled with hard pew seating and an empty ticket office. David Plowden had an eye for the working world of steam locomotives. He photographed the grunts, the engineers, the slow trail of freight cars across empty Midwestern fields, the brakemen and the grit of the train yards. Plowden’s Requiem for Steam is the result of a man riding the rails, impassioned on capturing a dying industrial culture.