Statistics for occurrence #1 of “Messrs. Mason” in chapter 4.16 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: Volume 2.:
...nified and manifested no little indignation as he spoke of the unusual treatment received at our hands.
immediately asked if I might see his passenger-list, saying that I had information that Messrs. Mason and Slidell were on board.
The mention of Mr. Slidell's name caused that gentleman to come up and say, I am Mr. Slidell; do you want to see me?
Mr. Mason, whom I knew very well, also came up at ...
† 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.