Allegheny Portage Railroad ended in 1857.
Allegheny Portage Railroad was created in 1831.
Allegheny Valley Railroad ended in 1891.
No. The Baltimore & Ohio was America's first common carrier railroad (1830), and beat the APRR by four years.
The first such railroad tunnel, constructed for the Allegheny Portage Railroad in Pennsylvania, was completed in 1832
Oregon Portage Railroad was created in 1858.
It was part of a canal system across Pennsylvania. It carried canal barges up and over the Allegheny mountains (the same barrier that the "horseshoe curve" solved.
Allegheny Valley Railroad was created in 1852.
There are several landmarks in Pennsylvania. These include the 1762 Waterworks located in Bethlehem, Northampton. Another is the Allegheny Portage Railroad of the Pennsylvania Canal located in Johnstown, Blair.
Mark. Graham has written: 'Thailand's vanishing flora and fauna' -- subject(s): Zoology, Botany, Wildlife conservation, Nature conservation 'Reports of Mark Graham and John S. Wiestling, superintendents of motive power and transportation, on the Portage Railway to the Board of Canal Commissioners' -- subject(s): Allegheny Portage Railroad
Allegheny Southern Railway ended in 1984.
Allegheny Athletic Association ended in 1896.
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.