Statistics for occurrence #1 of “Mr. Mason” in chapter 30 of Varina Davis, Jefferson Davis: Ex-President of the Confederate States of America, A Memoir by his Wife, Volume 2:

...o this letter no answer was returned, and after waiting a reasonable time Mr. Mason addressed another letter to the minister: No. 54 Devonshire Street, Portland Place, London, July 24, 1862. Mr. Mason presents his compliments to Earl Russell, and if agreeable to his Lordship, Mr. Mason would be obliged if Earl Russell would allow him the honor of an interview, at such time as may be convenient to ...
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