Statistics for occurrence #1 of “Mr. Lincoln” in entry mcclellan-george-brinton of Harper's Encyclopedia of United States History:

...s delay in pursuing the Confederates caused him to be superseded in command by General Burnside. General McClellan was the unsuccessful Democratic candidate for President of the United States against Mr. Lincoln in 1864 (see below). He resigned his commission in the army on the day of the election, Nov. 8, and took up his residence in New York. After a visit to Europe, he became (1868) a citizen of New Jer...
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