Statistics for occurrence #1 of “Mr. Porter” in chapter 1.1, section c.1.1.1, page 23 of Southern Historical Society Papers, Volume 19.:

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The plan of Mr. Porter 's model could not have been carried out on the Merrimac, except by extending the shield to cover her ends. The report next states that Mr. Porter approved of the plan of submerged ends, and mad...
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