Statistics for occurrence #1 of “Assistant-Engineer J. De Graff” in chapter 4, page 131 of Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 8.:
...made of the hull, armor, etc., of the iron-clad Tennessee, and I herewith submit the report, (order of survey and report marked Nos. 1 and 2,) as well as a sectional view of the vessel made by Second Assistant-Engineer J. De Graff , of this ship, and a drawing in water-colors by...
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