10 Eerie Facts about H.H. Holmes Infographic: https://grapact.com/10-eerie-facts-about-h-h-holmes/

https://www.biography.com/crime-figure/hh-holmes (1), (2), (10)

https://www.history.com/news/murder-castle-h-h-holmes-chicago (3), (5), (10)  

https://mysteriouschicago.com/top-ten-myths-about-h-h-holmes/ (6) 

https://en.wikipedia.org/wiki/H._H._Holmes (7), (9)

https://www.grunge.com/494250/myths-about-h-h-holmes-you-need-to-stop-believing/ (8) 

https://en.wikipedia.org/wiki/Thomas_Neill_Cream (8)