199: The Knickerbocker Hotel(PA)
Sources:
America's Most Haunted: The Secrets of Paranormal Places (book)
https://www.amazon.com/Americas-Most-Haunted-Secrets-
Paranormal/dp/0425270149
http://www.knickerbockerlinesville.com/
https://www.youtube.com/watch?v=unZUVxRRLVI
https://www.youtube.com/watch?v=6MPZytkIUhM
https://www.youtube.com/watch?v=8enYqS8rJms