|Specifics: This is for Ghostbusters 101|
Not to be confused with the real world book Ghosts from Our Past: Both Literally and Figuratively: The Study of the Paranormal released by Three Rivers Press.
A book written by both Erin and Abby before parting ways, the book was later released without Erin's permission. She found out about it by a meeting with Ed Mulgrave Jr.. She that day found out more about it on Amazon including where she could get a hold of Abby. She went to Kenneth P. Higgins Institute to visit and request the book be taken down. She went with Abby and Erin to the Aldridge Mansion Museum to introduce them to Ed in the hopes they remove the book from Amazon. Ultimately she went with them into the mansion and she had a direct interaction with the ghost, Gertrude Aldridge.
On August 19, 2016, the Ghosts from Our Past Facebook posted the author photo of Erin and Abby from the first edition. 
- The book was released in the real world in a revision form by Three River Press.
- Ghosts From Our Past appears in Ghostbusters: Slime City as a Legendary item and provides a 5% Proton Pack damage boost. 
- Ghosts From Our Past appears in the music video for Elle King's "Good Girls" single. 
- On page 20 of Ghostbusters International #11, pages from Rowan's copy of "Ghosts From Our Past" are posted up in panel 7 under Ray Stantz:
- The drawing of giant Rowan grabbing people opposite of the 'Open the Barrier' page
- The close up drawing of Rowan's face opposite of 'The Fourth Cataclysm' page
- Ghostbusters (2016 Movie)
- Ghosts from Our Past: Both Literally and Figuratively: The Study of the Paranormal (Three Rivers Press) (Real world book)
- Tobin's Spirit Guide
- ↑ Ghosts From Our Past Facebook 8/19/16
- ↑ Ghosts From Our Past Facebook 7/26/16
- ↑ Ghosts From Our Past Facebook 8/5/16