Elmer, Walter F. Baltimore and Ohio Railroad Company. cartographic Maps. lcgft https://id.loc.gov/authorities/genreForms/gf2011026387 Baltimore, 1878. eng Map of the Eastern U.S. showing relief by hachures, drainage, cities and towns, state boundaries, canals, named railroad network, and the B. & O. in heavy black lines, indicates cooperative connections, unfinished and proposed lines. Description derived from published bibliography. Includes comparative distances to Baltimore and New York, length of finished lines, Ohio River bridges, and a list of officials. Inset: [View of] the marine terminus of the Baltimore & Ohio Rail Road ... 9 x 34 cm. Scale 1:2,534,400. LC Railroad maps, Baltimore and Ohio Railroad Company--Maps. Railroads--United States--Maps. United States. Available also through the Library of Congress Web site as a raster image. http://hdl.loc.gov/loc.gmd/g3701p.rr003400