Statistics for occurrence #1 of “Mr. Mayor” in chapter 1 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1: prelminary narrative:

... for its surrender is a document which ought, it has been said, to find a place in every future polite letter writer. It runs thus: Sir, I have the honor to request that you will surrender. I am, Mr. Mayor , with high respect, your obedient servant. The prophecy of Captain Montgomery, commanding the Confederate river defence fleet, that the enemy . . . will never penetrate farther down the Mississip...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.