While the B&O Railroad Co. may be history, today there is a B&O Railroad Museum located in Baltimore.
I admit that my first exposure to the B&O Railroad was through the Monopoly board game. But subsequent history lessons revealed that there really was a Baltimore & Ohio Railroad Co. For a brief refresher course, here is what TheFreeDictionary.com has to say: "The Baltimore & Ohio Railroad, or B&O, was a 19th century railroad that operated on the East Coast of the United States and was the first railroad to offer commercial transportation of both people and freight. It was incorporated on February 28, 1827. The Chesapeake & Ohio Railroad, or C&O, took control of the B&O in 1963 and incorporated it, along with the Western Maryland Railway, into the Chessie System, in 1973. In 1980, the Chessie System merged with the Seaboard System to create CSX. In 1984, the B&O finally went out of existence when it formally merged with the C&O, which itself formally merged with CSX later that same year."
But never fear, while the B&O Railroad Co. may be history, today there is a B&O Railroad Museum located in Baltimore. The building itself was constructed in 1884 and is listed on the National Historic Registry. It became the B&O Transportation Museum on July 2, 1953. According to the museum's Web site (www.borail.org) this free museum exhibited the B&O collection of historic equipment and replicas, as well as parts of an 1893 exposition, public relations exhibits and artifacts.