"Allegheny Portage Railroad," Page 45, 1997         
Here is page seven of an 18-page excerpt from Charles S. Roberts' 1997 book entitled "Triumph I: Altoona To Pitcarin 1846-1996," page 45. Notable here are the gradient profiles of three railroads: the Old Portage, the New Portage, and the Pennsylvania.
Date: 1/1/1997 Location: Hollidaysburg, PA Views: 67 Collection Of:   Thomas C. Ayers
Author:  Thomas C. Ayers
"Allegheny Portage Railroad," Page 45, 1997
Picture Categories: This picture is part of album:  APR: "Allegheny Portage Railroad" ~ 1997
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