I think BOR’s killing books are a scam. I have actually read some of them. You read them, you learn absolutely nothing (except perhaps for some minor details) that you didn’t know before. Of course these books are mostly written and researched by BOR’s co-author. Yet because BOR has a huge cable audience BOR can promote the books ceaselessly on TV. BOR has a clever gig. He picks well known subjects, has his co-author do much of the actual work, then uses his TV show to promote the book. The reader learns nothing new.
His books are amateur hour. Anything he puts in a book can be found in the local library. His most ridiculous was Legends and Lies, about the Old West. Nothing new under the sun. A lot of it was taken directly from Time Life’s History of the West. I know because I have the complete set. His TV special of the same name was comical. Wild Bill Hickock and Wyatt Earp’s fake moustache
was on their face crooked. The show looked like something straight out of a junior high school class.