Pennsylvania. New construction began at Hollins, Maryland and ran west through the Green Spring Valley north of Baltimore. The line reached the Reisterstown Road at Owings Mills on June 13, 1832. Despite continuing fierce opposition from Philadelphia business and political interests, the Pennsylvania legislature finally chartered the York and Maryland Line Rail Road on March 14, 1832, authorizing it to connect the Baltimore & Susquehanna, at the Mason and Dixon Line/state line, with York, Pennsylvania, a commercial city center in the southern part of the Keystone State, with water access on Codorus Creek. The directors of the Baltimore & Susquehanna did not immediately give up their planned route via Westminster, the terms of the new charter being somewhat onerous. The Adams County Railroad was chartered on April 6, 1832, in Pennsylvania, to run from Gettysburg to the Maryland state line, but was never constructed, nor was the line to Westminster (later known as the Green Spring Branch) extended further northwest. A further amendment to the York & Maryland Line's charter in 1837, allowed it the unlimited use of the Wrightsville, York and Gettysburg Railroad, which it had aided financially. The Baltimore & Susquehanna, and York & Maryland Line had eventually completed the line from Baltimore to York by 1838. This line included the use of the Howard Tunnel, (275 feet long), near Seven Valleys, Pennsylvania, constructed 1836-1837, and opened 1838, the earliest railroad tunnel in the U.S. still in use today. In 1832 the railroad purchased its first locomotive, the Herald, which was run along the route from Baltimore to Owings Mills. This purchase was a major undertaking, for it was built in England and transported by ship The America's. Also, because the age of railroading was new to America, an engineer was sent with the locomotive to ensure that he could teach others the finer art of locomotive engineering. John Lawson (b. Makerfield, November 27, 1810) went on to own, captain, and be first engineer to the Cherokee steamboat, which helped with the Confederate Army effort during the American Civil War. Also in 1832, the Railway built Bolton Station, the first in Baltimore, with an adjacent roundhouse and shops, at Bolton and North Howard Streets in then old northern Baltimore City, overlooking the west bank of the Jones Falls, near the former George Grundy estate of Bolton mansion. In April 1840, the Wrightsville, York & Gettysburg R.R. had been