Allegheny Valley Railroad ended in 1891.
Allegheny Valley Railroad was created in 1852.
Allegheny Portage Railroad ended in 1857.
The original Allegheny Valley Railroad (AVRR) was formed in 1853, and it was constructed to transport oil from Oil Creek and Titusville to market. (Oil was first drilled there in 1859, and this began the modern petroleum age.) There are a number of historical societies with "holdings" that speak to the formation and evolution of the AVRR, and more than a few model railroad clubs in the area have documentation.
Allegheny Portage Railroad was created in 1831.
Coos Valley Railroad ended in 1982.
Cache Valley Railroad ended in 1897.
Mohawk Valley Railroad ended in 1853.
Vermont Valley Railroad ended in 1949.
Wallkill Valley Railroad ended in 1952.
Lehigh Valley Railroad ended in 1976.
Aroostook Valley Railroad ended in 1996.
Warwick Valley Railroad ended in 1882.