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  2. RR Donnelley - Wikipedia

    en.wikipedia.org/wiki/RR_Donnelley

    R.R. Donnelley's cartographic production facility grew to be one of the largest custom mapmaking companies in the United States. In the early 1990s, the division successfully integrated routing technology with its digital map databases and launched a separate company, Geosystems, [11] which several years later became MapQuest. [12]

  3. Henryton Tunnel - Wikipedia

    en.wikipedia.org/wiki/Henryton_Tunnel

    The Henryton Tunnel, located near Henryton in southern Carroll County, Maryland, is the third-oldest tunnel in the world that remains in active railroad use. [2] Constructed by the Baltimore and Ohio (B&O) Railroad and opened around 1850, it was the first tunnel constructed on the B&O's Old Main Line.

  4. Baltimore and Ohio Railroad - Wikipedia

    en.wikipedia.org/wiki/Baltimore_and_Ohio_Railroad

    Share of the Baltimore and Ohio Rail-Road Company, issued 26. July 1856; signed by Johns Hopkins as president pro. tem. Partial government ownership caused some operational problems. Of the thirty members on its board of directors, twelve were elected by shareholders, while eighteen were appointed either by Maryland or the Baltimore City ...

  5. Frederick Branch (Baltimore and Ohio Railroad) - Wikipedia

    en.wikipedia.org/wiki/Frederick_Branch...

    It was built by the Baltimore and Ohio Railroad (B&O) in 1831, and is now owned by the Maryland Department of Transportation (MDOT). [1] The 3.4 mi (5.5 km) branch extends between Frederick Junction – a wye with the Old Main Line Subdivision of CSX Transportation on the west side of the Monocacy River – and its terminus at East Street in ...

  6. R.R. Donnelley and Sons Co. Calumet Plant - Wikipedia

    en.wikipedia.org/wiki/R.R._Donnelley_and_Sons_Co...

    Although considered to be expensive by the standards of that time, T.E. Donnelley agreed that the support would be needed for the many tons of paper they used and large presses they operated. Supported by 4,675 steel- reinforced concrete columns , this type of construction not only served the Donnelley well, it also provided the perfect ...

  7. B&O Railroad Museum - Wikipedia

    en.wikipedia.org/wiki/B&O_Railroad_Museum

    Baltimore and Ohio 0-4-0 "Grasshopper", built in 1832 by Phineas Davis and Israel Gartner, one of the oldest surviving American locomotives; Baltimore and Ohio 4-6-2 #5300 "President Washington" built in 1927. Baltimore and Ohio 2-8-2 #4500, USRA Light Mikado and the world's first USRA locomotive, built in 1918. Chesapeake and Ohio 4-6-0 #377 ...

  8. MapQuest - Wikipedia

    en.wikipedia.org/wiki/MapQuest

    MapQuest's origins date to 1967 with the founding of Cartographic Services, a division of R.R. Donnelley & Sons in Chicago, which moved to Lancaster, Pennsylvania, in 1969. In the mid-1980s, R.R. Donnelley & Sons began generating maps and routes for customers, with cooperation by Barry Glick, a University at Buffalo Ph.D. [ 4 ] In 1994, it was ...

  9. Baltimore Terminal Subdivision - Wikipedia

    en.wikipedia.org/wiki/Baltimore_Terminal_Subdivision

    The Baltimore Terminal Subdivision is a railroad line owned and operated by CSX Transportation in the U.S. state of Maryland.The line runs from Baltimore to Halethorpe along the original Baltimore and Ohio Railroad (B&O) line, one of the oldest rail lines in the United States and the first passenger railroad line.