Sources from Episode 139

  1. “How Thousands of Headstones Ended Up Under a Philadelphia Bridge,” CityLab, June 2012, https://www.citylab.com/design/2012/06/how-thousands-headstones-ended-under-philadelphia-bridge/2410.

  2. Anonymous. 1944. "Preliminary observations." Civilian Public Service. 8 28. Accessed 11/27/2019. http://civilianpublicservice.org/sites/default/files/sites/civilianpublicservice.org/files/documents/preliminary-observations.pdf.

  3. Kaczmarek, Dale. 2011. Fort Mifflin Investigation. Accessed 11/27/2019. http://www.ghostresearch.org/Investigations/mifflin.html.

  4. “Inside Philadelphia’s Byberry Mental Hospital House Of Horrors,” All That’s Interesting, December 2017, https://allthatsinteresting.com/byberry-mental-hospital.

  5. Matt Lake, Weird Pennsylvania: Your Travel Guide to Pennsylvania's Local Legends and Best Kept Secrets (New York, NY: Sterling Publishing Co., 2005).

  6. Jonathan D. Scott, The Woman in the Wilderness (Middleton Books, 2005).

  7. “Cemeteries,” Philadelphia Encyclopedia, 2014, https://philadelphiaencyclopedia.org/archive/cemeteries.

  8. Oordt, Darcy. 2015. Haunted Philadelphia: Famous Phantoms, Sinister Sites, and Lingering Legends. Rowan & Littlefield.

  9. “Perpetual Motion Machines: Working Against Physical Laws,” Live Science, August 2016, https://www.livescience.com/55944-perpetual-motion-machines.html.

  10. "Convicts Fare Better Than Insane,” The Philadelphia Record, May 9, 1946.

  11. J.P. Webster, The Philadelphia State Hospital at Byberry: A History of Misery and Medicine (Arcadia Publishing, 2013).