Cousins,
whilst editing a book record here just now I was very surprised to see this title pop up on my screen:
"I believe I shall die an impenetrable secret": the writings of Elizabeth Barstow Stoddard, by Regula Giovanni (who was born in ... 1966!!!)
Elizabeth Stoddard lived from 1823 to 1902. The book was published by Peter Lang in New York in 2003.
The title quote sounds like dialogue that would have been uttered by Liz in one of her more desperate moments, perhaps during the 1967 Jason Maguire storyline.
Curious, isn't it?
G.