I've heard more from the decedent of Edson. What we're looking at now is a possible connection between her ancestor Edson Healy and Lyman Potter Spencer.
Edson was studying near Newburgh, Ohio. He was friends with James A Garfield (they have letters between Garfield and Edson), and family lore says that around 1862 Edson, along with "his teacher Mr. Spencer", enlisted in the army for the Civil War. We do know that Lyman Potter Spencer did join the Ohio 2nd Heavy Artillery, and Lyman and Garfield were also friends.
She has also sent another low-resolution image. I'm not allowed to share the whole thing, because a cousin owns the original and my correspondent does not have permission from the owner. I've excerpted a bit of it below.
The page is a decorated page with drawings of birds, flourishes all around, a drawn book with "Newburgh, Cuyahoga Co. Ohio August 29, 1864" on it, and a drawn scroll, below, that has written on it "According to the Celebrated Spencerian System."
The question I'm going to try and help her nail down is if Lyman could possibly have been Edson's teacher.
If we can show this connection, it seems like it would add a whole new level of importance to these drawings and documents.
I'll keep you up-to-date. And if anyone has detailed info on Lyman and where he taught, especially before the war, I would greatly appreciate it.
@AnasaziWrites