Citizen 14 comic is made by Warren and Ellis. This may be a reference to graphic novel writer Warren Ellis.
The Batman 127 issue mentioned by Booth was worth $300 on the show, which is now worth $800 in 2020.
The episodes early reference to the recently discovered skeleton in The Kunlun Mountains in which Brennan would be contributing stress marker analysis may have been a reference relating to the comic book theme of the episode. The comic book character Danny Rand aka Iron Fist is trained in the mystical city of K'un Lun which is located in The Kunlun Mountains.