Thanks for the information. I wonder if there is anything at all to the claim that Russell encountered Christadelphians while visiting Glasgow. The Christadelphian movement was strongest in Scotland in the late nineteenth century. If Russell was to engage Christadelphians anywhere, then that might be the place for him to do it. But what year would it have been?
I got a bit confused distinguishing two apparently different John Thomases.
Despite Dr John Thomas (founder of Christadelphians) disapproving Benjamin Wilson, I noticed in conversation with them that Christadelphians continued to make use of the Emphatic Diaglott until recent times.
I have a copy of Zydek’s biography. He writes well, but there is not a lot of supporting references. Knox’s new book I think is good.
I noticed that the presentation of early Watch Tower history in this new book on early Bible Students in Vienna makes use of your work, with an interesting graphic which depicts the chronology of Watchtower development as follows:
1600-1850 - Literalists
1850-1879 - One Faith/Age to Come/Abrahamic Faith
1879-1886 - Watchtower Movement
1886-1931 - Bible Students
1931- Jehovah’s Witnesses
I guess you know the author and about this book since you are mentioned in the acknowledgements.
https://www.amazon.com/Die-Anfänge-Jehovas-Zeugen-Wien/dp/1725925508/