I used to correspond with Sarah as well. I have a copy of the Moneyhun book she compiled. My last letter to her was returned back in the 1980's. I have wondered about her as well and have written in my notes that she passedd away about April 1985 in Delaware , IN.
If there are any letter's of corrections to the Moneyhun book in you aunt Fern's files, I would be interested in what they were. That was what Sarah last wrote me about, and I never did get them.