There might be. For instance, if the library has a comprehensive collection, it could include the story of the Bachelor's Grove Cemetery, known for its hauntings. The library may hold books or accounts that detail the strange apparitions and unexplained phenomena reported there. Another possibility is the story of the Hull House in Chicago. It has a long history of alleged paranormal activity, and the library might have materials related to it.
You might find collections of local ghost stories, books about the history of hauntings in Illinois, and perhaps some research materials or eyewitness accounts.
I don't really know who Nathan Bartlett is in this context. He could be an ordinary person whose story is being told, or perhaps he's someone with a unique or remarkable story.
I'm not sure who Gerry Bartlett specifically is within the context of Fantastic Fiction without more information. There could be many authors or characters with that name. It might be a relatively unknown figure, or it could be a name specific to a certain niche or area within the Fantastic Fiction realm.
The 'bartlett war of the ghost story' is likely to be a very interesting narrative. Bartlett's work often focuses on how stories are transmitted and changed over time. In this 'war of the ghost story', it might explore the different versions of the ghost story that emerge during a supposed 'war' situation, perhaps symbolizing the battle of different interpretations or the evolution of the story as it passes from one person to another.
Charlie Bartlett is not based on a true story. It's a work of imagination crafted by the writers to engage the audience with an interesting plot and characters.