I don’t know Carolyn Saunders. And I don’t know whether she finished her ‘Dear John’ letter or not. But it appears she rehearsed her lines on this copy of Superman Supacomic #41, and I must say it rates as the most civil of break-up letters, as well as the most notable and unexpected comics marginalia I have come across to date.
I wonder whether it was the fellow's own copy she was practising on...? Personally, that would have pissed me off more than the break-up...!