Hound of the Baskervilles
Reading Hound of the Baskervilles in my way through the Holmes canon, and, man, was Holmes an inveterate name-dropper!
In relation to the death of Sir Charles Baskerville: "I had observed some newspaper comment at the time, but I was exceedingly preoccupied by that little affair of the Vatican cameos, and in my anxiety to oblige the Pope I lost touch with several interesting English cases."
And that is where the Vatican Cameo reference in Scandal in Belgravia came from.
(Unfortunately, I can't give a page reference as I'm reading it on my Rocket e-Book, which doesn't give page numbers.)
In relation to the death of Sir Charles Baskerville: "I had observed some newspaper comment at the time, but I was exceedingly preoccupied by that little affair of the Vatican cameos, and in my anxiety to oblige the Pope I lost touch with several interesting English cases."
And that is where the Vatican Cameo reference in Scandal in Belgravia came from.
(Unfortunately, I can't give a page reference as I'm reading it on my Rocket e-Book, which doesn't give page numbers.)