It depends. Sometimes a book might be based on real events but have fictional elements added. So, it's hard to say for sure without more details about the book.
Well, Project Blue Book claims to be based on true stories, but like many TV shows, it likely tweaks and enhances certain aspects to make it more engaging for the audience.
The truthfulness of the stories in Project Blue Book varies. Some incidents might be based on real events with some modifications, while others could be purely fictional creations to add intrigue and mystery.
Project Blue Book incorporates elements of real-life cases, but it's not a strict documentary. It weaves together real events with fictional elements to create an engaging storyline.
The Blue Book Project was a real U.S. Air Force study of UFOs. It aimed to analyze and document various UFO sightings. It collected a large amount of data from eyewitness reports, military personnel sightings, and more. The project was an attempt to understand these mysterious aerial phenomena scientifically.