"B & O directory : coal mines & coke ovens located on or accessible to the Baltimore & Ohio Railroad."; "Baltimore and Ohio Railroad Company."; "Baltimore and Ohio Railroad Company."; "Coal--Transportation--United States."; "Baltimore and Ohio Railroad Company."; "1957"; "Serial. Printed Ephemera Collection has: 1957.
"; ""; "P7800"; "pec"; "Baltimore and Ohio Railroad Company.", "Coal--Transportation--United States."; "14256"; .