Political debates between Hon. Abraham Lincoln and Hon. Stephen A. Douglas...

[STS Lincolnite]

I think, generally speaking, Lincoln signed "Abraham Lincoln" on formal documents as President. But he signed "A. Lincoln" on letters, notes to people, etc. I do not know how many exceptions there are to what I just opined. Even his letters/notes to Mary were signed "A. Lincoln," I believe.

Roger, That has always been my understanding as well. It would be interesting to see how many exceptions to the rule there might be.