| Here is page 4 of a 22-page monograph entitled "Sylvester Welch's Report On The Allegheny Portage Railroad: 1833." It was published by William H. Shank in June of 1988. Bottom Illustration Caption: "Looking down-hill, along Plane #6, on the Allegheny Portage Railroad. The bridge shown is the famous "Skew Arch," still standing, where the Huntingdon, Cambria, and Indiana Turnpike crossed the Portage." |