His Wikipedia entry notes two historical contradictions in his writing that refer to Madeline Kahn and Noël Coward (having them comment on circumstances that occurred after their respective deaths).
The birthdate for the author is listed as 1954, yet his books contain interviews conducted with people like William Haines, Agnes Moorehead, Marjorie Main and Sal Mineo, all of whom died in the 1973-76 period, when the author was in his late teens/early 20s. While it’s not *impossible* for a young person to have interviewed much older industry veterans, you’d think that he’d need to submit reference letters and/or clippings of previous publications before they agreed to be interviewed. As it is, newspapers.com shows no evidence of publications prior to 1983, when he was a writer for the Gannett News Service as George Hadley-Garcia (at least I presume they’re the same person).