John A Bohnet was a well-known name in Watch Tower history. Donator of Miracle Wheat, manager of the cemetery where CTR was buried, he later wrote articles for the Golden Age magazine.
Benjamin Wilson of course was the author or compiler of the Emphatic Diaglott.
The two men met by appointment in 1892, and Bohnet later wrote up the experience in this article from the Bible Student newspaper, the St Paul Enterprise. It was featured on the front page of the issue for April 4, 1916.
Note that Wilson states that he is not a Christadelphian.