Thanks to BookBrowse and Net Galley for the ARC of this book. It is the story of a young woman who works as the main librarian, curator and collector for J P Morgan as he builds his rare book collection. She becomes well known and well respected within the world of collectors. She is biracial and makes the decision to pass as white. I think because of that and from being a female in a male world, it makes it easier for her to take risks to show her competence and personality to others. I am always leery of historical fiction, and how many liberties the author may take. I am thrilled to say that my research showed that this remarkable story is very close to the truth. Very readable and extremely well written.