The ForteanTimes magazine that Ronald Resnick shows to Sam and Dean has a Cyberman from Doctor Who (2005) on its cover.
Contains many allusions to The X Files episode Folie a Deux (1998), including the basic plot, (a man holding people hostage in order to protect them from a monster) and Reznick being a character's last name.
The vault scenes were filmed in an actual vault as it proved too difficult to build one on set.
The Fortean Times was created and published by Charles Fort, whom also wrote the titled book, Book of The Damned, featured later in Book of the Damned (2015).
Charles Fort published The Fortean Times with what most people call supernatural events, the same type of events that hunters on the show use to track evil. Similar to Ripley's Believe it or Not i.e. Frogs falling from the sky, two headed cows, all the stories were actual events unexplained and unnaturally occurring. Mick Jagger of The Rolling Stones always had the newest edition of The Fortean Times when he toured.