Baer, Christopher T. "PRR Chronology". Pennsylvania Railroad Technical and Historical Society. Archived from the original on December 2, 2008. Retrieved December 16, 2008.
United States Geological Survey (1959). Pittsburgh, Pennsylvania (Map). 1:250,000 – via University of Texas Libraries' Map Collection.
web.archive.org
Baer, Christopher T. "PRR Chronology". Pennsylvania Railroad Technical and Historical Society. Archived from the original on December 2, 2008. Retrieved December 16, 2008.