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It began construction in 1828.
Baltimore and Ohio railroad
The B&O Railroad stands for Baltimore and Ohio Railroad, because it connected the city of Baltimore, Maryland with the Ohio River.
the railroad began in 1830.
Baltimore and Ohio Railroad
The address of the Baltimore And Ohio Railroad Historical Society is: Po Box 24225, Baltimore, MD 21227-0725
The Baltimore and Ohio Railroad.
1838
The Baltimore & Ohio Railroad (B&O).
The Baltimore and Ohio
John T. King has written: '...Guide to Baltimore & Ohio railroad' -- subject(s): Description and travel, Baltimore and Ohio Railroad Company
That may have been the B&O, or the Baltimore and Ohio railroad.