Statistics for occurrence #1 of “S. D. Edmund” in chapter 41 of Admiral David D. Porter, The Naval History of the Civil War.:

...d-Assistant, Newton Eggleston; Acting-Third-Assistants, John Whittaker and Philip Hubletz. Acting-Ensign, John Bishop; Engineers: Acting-Second-Assistant, Wm. Mahan; Acting-Third-Assistants, S. D. Edmund and Eli Simpson. Acting-Master's Mates. J. F. Daggett and T. H. P. Gross; Engineers: Acting-Third-Assistants, S. M. Van Clief, Richard Wareham and J. W. Cross. Acting-Assistant Pa...
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S. D. Edmund 2 2 0 0 0 user votes

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