Statistics for occurrence #1 of “Mr. Mason” in chapter 120 of C. Edwards Lester, Life and public services of Charles Sumner: Born Jan. 6, 1811. Died March 11, 1874.:

...le block of African Slavery: knock that out, and the mighty fabric, with all that it upholds, topples and tumbles to its fall. These are his very words, uttered in debate here. And his colleague [ Mr. Mason ], who never hesitates where Slavery is in question, proclaims that it is ennobling, to both races, the white and the black,—a word which, so far as the slave is concerned, he changes, on a subs...
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.