Altoona_works.jpg
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| Description | Map of the Pennsylvania Railroad Altoona Works |
| Date | |
| Source | http://www.nps.gov/history/history/online_books/railroad/shsm.htm |
| Author | National Park Service |
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Permission
( Reusing this file ) |
Public Domain - work of the United States National Park Service |
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This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government , such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. |
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