The Research Notes - Editor Ogata's Notes 1 is a notebook in Fatal Frame.
Mr. Takamine needs some background material for his next work. There's a book about Himuro Mansion by a certain folklorist, and I'm supposed to look for it. A book about Shinto rituals and legends from every part of the country.
Author: Ryozo Munakata.
I couldn't find the book, but I found a news article from that period about it. It's a small missing-persons story, but it might be helpful as background material.