Cumberland Valley Railroad
...that the Cumberland Valley Railroad ran its first trains in 1837 on oak stringers in place of iron rails, and that in 1839 it ran the first sleeping cars in America?
...that the <b id="mwEM0"><a href="./Cumberland_Valley_Railroad" id="mwEM4" rel="mw:WikiLink" title="Cumberland Valley Railroad">Cumberland Valley Railroad</a></b> ran its first trains in 1837 on <a href="./Oak" id="mwEM8" rel="mw:WikiLink" title="Oak">oak</a> stringers in place of <a href="./Iron" id="mwENA" rel="mw:WikiLink" title="Iron">iron</a> rails, and that in 1839 it ran the first <a href="./Sleeping_car" id="mwENE" rel="mw:WikiLink" title="Sleeping car">sleeping cars</a> in America?