Statistics for occurrence #1 of “Acting-Master, Jeremiah Irwin” in chapter 44 of Admiral David D. Porter, The Naval History of the Civil War.:

...ter's Mates, Richard Mitchell and L. M. Knapp; Engineers: Acting-Chief, C. H. Christopher; First-Assistant, Jos. Goodwin; Acting-Third-Assistant, Edward Lodge; Acting-Gunner, Robert Sherman. Acting-Master, Jeremiah Irwin ; Acting-Ensigns, Wm. Sill; Acting-Master's Mates, Edw. Perkins and Edwin Boyce; Engineers: Acting-Chief, Peter Hartwig; Acting-First-Assistants, W. Y. Sedman and S. L. Walkenshaw; Acting-Second-Assis...
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