Allegheny Portage Railroad

Allegheny Portage Railroad
The video gives the history of the Allegheny Portage Railroad in the westward movement of settlers and commerce in central Pennsylvania in the mid-1800's.
National Park Service
Harpers Ferry, WV. Harpers Ferry Center.
The National Park Service (NPS) is an agency of the United States federal government within the U.S. Department of the Interior that manages all national parks, 
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Copyright in U.S. Government Works
Mar 8, 2023 — U.S. government works are in the public domain (i.e., not protected by the U.S. Copyright Act). You can freely use them (in a copyright sense
https://archive.org/details/gov.ntis.ava14159vnb1