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

...m. B. Miles. Acting-Ensign, Geo. W. Barrett; Acting-Master's Mates, T. E. Quayle, T. M. Nelson and W. S. Baldwin; Engineers: Acting-Second-Assistant, Moses Peterson; Acting-Third-Assistants, R. H. Ryan and G. B. McDermott. Acting-Ensign, P. C. Asserson; Acting-Master's Mate, E. H. Schmidt: Engineers: Acting-Third-Assistants, J. A. Spaulding and J. H. Tinn. Acting-Ensigns, F. R. We...
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