(From Annual Reports of the Cumberland Valley Railroad)
_Year_: _Miles_
1852 3,182[a]
1853 20,722[b]
1854 18,087
1855 14,151
1856 20,998
1857 22,779
1858 29,094
1859 29,571
1860 4,824
1861 4,346
1862 ([c])
1863 5,339
1864 224
1865 2,215
1866 20,546
1867 5,709
1868 13,626
1869 1,372
1870 ...
1871 2,102
1872 4,002
1873 3,721
1874 3,466
1875 636
1876 870
1877 406
1878 4,433
1879 ...
1880 8,306
1881 ([d])
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Total 244,727[e]