Statistics for occurrence #1 of “Mr. Lincoln” in chapter 32 of John G. Nicolay, A Short Life of Abraham Lincoln, condensed from Nicolay and Hayes' Abraham Lincoln: A History:

...ms proposed by them. The essential impossibility of these terms was not, however, apparent to Mr. Greeley, who sent them on to Washington, soliciting fresh instructions. With unwearied patience, Mr. Lincoln drew up a final paper, To whom it may Concern, formally restating his position, and despatched Major Hay with it to Niagara. This ended the conference; the Confederates charging the President thro...
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