Yes, I think Richard Bartz worked with Fern Liverance on the Bly history. I believe they published it in Washington, but not sure about that yet. I have an email out to Richard. Fern lived in Spring Valley, where most of the Blys were around the 1890s - that would be Teft William's kids, my grandfather among them.
You just reminded me about Wings of a Prayer! I've had it on my bookshelf for years. Thank you!
Anyway, I'm still pondering the very old Blys. Do you have any information on John Bly, hanged about 1779? Shays rebellion.