Statistics for occurrence #1 of “G. H. Marks” in chapter 51 of Admiral David D. Porter, The Naval History of the Civil War.:

...g-Ensigns, H. F. Dorton and E. S. Shurtliff; Acting-Master's Mates, W. H. Hunt and J. O. Conway. Acting-Master, Henry O. Stone; Acting-Ensign, R. C. Wright; Acting-Master's Mates, Wm. Duffy, G. H. Marks and S. W. Ward. Acting-Master, S. Nickerson; Acting-Master's Mates, H. C. Fuller, J. H. Taylor and J. H. King. Acting-Master, Samuel Haines; Acting-Ensign, J. A. Merrill; Acting-Mas...
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