Statistics for occurrence #1 of “Mr. Lincoln” in chapter 8 of Varina Davis, Jefferson Davis: Ex-President of the Confederate States of America, A Memoir by his Wife, Volume 1:

...said, Of course it was your own sawmill. By no means, said the President. I was paid to do it. I cut the timber first, then sawed and rafted it. In about a week we heard that Mr. Davis and Mr. Lincoln had both been raftsmen on the river, and Mr. Davis had been hired to saw lumber in the West for many years. It amused him greatly, and he never explained the mistake.
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