A study in steamA new book, in honor of Trains' 75th anniversary, features lavish images of North American steam scenes, exclusively from Trains' files Brazilian behemothBy Adam Auxier This ore-heavy narrow gauge line is among the Western Hemisphere's busiest railroads  2015 Trains photo contest winnersWe asked for your images that show the details of railroading. See our choices and learn the theme for next year's contest  Map of the month: Washington, D.C., then and nowBy Bill Metzger    Afternoon in OttawaBy William Benning Stewart Shadows of many shades were lengthening along the Rock Island in 1965  In my own words: First encounters of a close kindBy Geoffrey H. Doughty