Okay, OP, are you a student working on a history paper? If not, then I can't help but ask - why do you care? Look, I think about a lot of things that folks may find odd, but this one has never crossed my mind. I read a fair amount about the civil war as a child and had a prolonged fascination with Lincoln. Then I got a little older, grew a little wiser, and morphed the fascination into Douglass, Truth, Tubman and the unknown many who made the ultimate sacrifice to move our nation towards a more perfect union (as did Lincoln, just that he was not a solo actor).