This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Alphabet Route map.svg spuimap Map of the Alphabet Route traced on USGS topos and sections rotated to match Rail transport maps of the United States New York Chicago and St Louis Railroad Wheeling and Lake Erie Railway Pittsburgh and West Virginia Railway Western Maryland Railway Reading Company Central Railroad of New Jersey Lehigh