national tube co. engineering department

Map of the Pittsburgh district showing railroad terminals and location of iron and steel works having track connections

Main map covers city and suburbs. Inset maps cover railroad extensions into region. "Supplement to The Iron Age, March 22, 19[06]." Includes "Alphabetical list of works ...," indexed "Numerical list of works ...," list of blast furnaces, directory of railroad connections, and 5 insets. Available also through the Library of Congress Web site as a raster image. LC copy brittle, torn along fold lines, and lacking sections along margins.