Statistics for occurrence #1 of “Messrs. Mason” in article 24 of The Daily Dispatch: February 3, 1862., [Electronic resource]:

...f the world, that all we have to do is what we have done before, up to the very last year. This is now a simple matter of precedent. Our statesmen and lawyers know quite as much on the subject as Messrs. Mason and Slidell, and are in no need of their information or advice. The London Herald, of the 7th January, contains the following unanswerable arguments in favor of Southern recognition: ...
Max. Freq. Min. Freq.
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