https://truthhistory.blogspot.com/2023/07/la-prehistoire-des-temoins-de-jehovah.html
A short review of professor Blandre's new book about Russell's antecedents. It is in French. I haven't finished it yet. I'm about two thirds through. I can recommend it based on what I've read. Probably no book is totally accurate, and this isn't either. But it's really good.